[Electric Focus] 5G WiFi Projector with Bluetooth

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$239.99 @ Amazon.com

【Electric Focus & Auto Keystone】JOWLURK projector has a built-in smart sensor that automatically adjusts the screen when placed at an angle of less than 15°. This 4k projector can also focus through the remote control, and the precision electric focus system responds quickly, from blurry to sharp in just 3 second.

【4K Support & 22000 Lumens】This projector with wifi and bluetooth brings you crystal clear picture quality with 4K compatibility and native 1080P resolution support, with 22000 lumens of high brightness for a superior viewing experience day or night, plus high contrast technology to ensure full color, making it ideal for home theater.

【WiFi 6 & Bluetooth 5.3】JOWLURK outdoor projector is equipped with Wi-Fi 6 for high-speed wireless connectivity. This bluetooth projector built-in HiFi speaker and supports Bluetooth 5.3 connection, realizing high-speed and stable two-way audio transmission. Not only can the sound output to the speakers, but also can be transformed into a high-quality audio, direct playback of music, audio-visual enjoyment beyond imagination.

【450'' Projectable Size & Zoom Function】JOWLURK movie projector has a large projection size of 450 inches. The projection size supports the scaling function, so whether you need the wide vision of large-screen viewing or need to project in a narrow space, you can adjust the most suitable projection size. Whether it's a home theater, a business meeting or an outdoor theater night, it's up to the task.

【Thermal cooling & compatibility】JOWLURK projector has cooling system, projector internal layout ventilated with a powerful cooling fan to keep the projector working for a long time without overheating. And fully compatible with iOS, Android, TV Stick, HDMI, USB, Laptop, DVD,and PS5, bring you the ultimate viewing experience.

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$129.89 @ Amazon.com (Save 7%)

[Native 1080P HD Video Projector] The movie projector produces vibrant and sharp images due to its native 1080P resolution, and 15000 lumens, while our eyes are protected by diffuse reflection. This movie projector can support a 300'' screen and provides vivid and sharp HD images with 1920x1080 real resolution and a 15000:1 contrast ratio. The Agreago projector is perfect for watching Netflix, YouTube, and Roku via TV sticks, which display photos and holiday decorations.

[WiFi 6 and 5.2 Bluetooth Function] Due to the 5G and 2.4G Dual-Band WiFi function, the projector with WiFi and Bluetooth enjoys a faster wireless speed, wider range, and smoother transmission than other single-band projectors. In less than 5 seconds, it gets connected. This WiFi projector has a faster and more stable wireless connection. For better sound at events or outdoor activities, 5.2 dual-channel Bluetooth makes it simple to connect the projector to a Bluetooth speaker.

[2 Speakers and 3D Stereo Audio] Without any external speakers, you can enjoy louder stereo with the help of built-in dual stereo speakers with a sound system. The internal speaker is adequate, not tinny to ensure crisp highs, strong midranges, and booming bass, this phone projector won't get hot after prolonged use and is quiet. A 3.5mm headphone port ensures headphones have a good effect without any noise concerns. You can enjoy better sound whether at home or outdoor.

[Multiple Compatible with Devices] With HDMI/USB/AV/Audio ports, the projector 1080 is compatible with the iPhone, Android phone, TV Stick, Laptop, tablet, Xbox, PS5, USB disk, external speaker, etc. Your home electronic devices will be more useful and powerful with our home theater projector. This projector has remote screen adjustment from any angle and a zoom function to resize the image from 50% to 100% without moving the projector helps you enjoy a large screen 40" to 300'' easily.

[Unique Design and Multiple Uses] The three-dimensional design of the projector makes this outdoor projector look beautiful. The drawstring bag can make the projector more portable and can be carried with you. Let's entertainment in your garden, backyard party, garage, and RV camping. Through movie projector supports ceiling, tabletop, tripod, and wall mount installation methods and angles, this wifi projector can also be used for online classes, yoga practice, painting and tailoring, etc.

[2024 Upgraded Portable Projector] Agreago 1080P Mini Projector adopts the latest Projection Technology. LCD color calibration and high light transmittance. Combining an innovative high-refraction 6-layer glassed lens, the video projector shows a clearer, brighter, and richer picture. The smart projector features a native 1920x1080P resolution with 1080 support delivering astonishingly realistic images for movies and videos.

[Electric Focus] Projector with WiFi and Bluetooth, Agreago 1080P Native Projector, 15000Lumens Portable Mini Projector, Outdoor Movie Projector Compatible with TV Stick/Android/HDMI/USB

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$83.99 @ Amazon.com (Save 35%)

[Official Netflix & Smart OS] XuanPad projector offers seamless access to over 1,000,000 videos from certified apps like Netflix, allowing you to enjoy your favorite shows and movies. Say goodbye to lag, stuttering and unexpected crashes—our smart projector stands apart. Powered by an upgraded Smart OS with intelligent background maintenance, automatic updates, and performance optimization, it delivers a buttery-smooth, hassle-free experience like never before.

[Pro Optics & Super Clarity] Featuring all-glass lenses with optical coatings, achieve up to 98% light transmission, providing sharper and more vibrant images compared to standard resin lenses. Our movie projector also features a unique pure copper heat pipe design, which boosts heat dissipation efficiency by 50% compared to standard cooling systems on the market. This innovation also increases the projector's brightness by 80%, ensuring it delivers consistently high brightness and stable operation, even during extended use.

[AI Electric Focus] No more manual adjustments! Our smart projector adopts advanced AI electric focus, locking onto crystal-clear images in under 1 second—controlled remotely with ease. Even kids and grandparents can master it effortlessly. With auto keystone correction, skewed angles are instantly fixed, delivering a flawless rectangular screen every time.

[Dustproof Design] Our mini projector features a multi-layer dustproof mesh and removable side-panel design, effectively blocking debris while making cleaning a breeze. The dual-protection system keeps core components spotless, preventing the annoying black spots that plague other projectors after just 3-6 months of use. Enjoy consistent, high-quality projection every time.

[WiFi 6 & Bluetooth 5.2] Experience lightning-fast streaming with WiFi 6—connect in seconds. Equipped with dual-channel Bluetooth 5.2, our bluetooth projector allows seamless wireless pairing with speakers or headphones, delivering immersive sound. Our unique cooling technology reduces operating noise by 40% compared to ordinary fan-cooled projectors, while enhancing audio quality for a true cinematic experience.

[210° Flexible] 210° rotatable stand offers more versatility than standard 180°. It can meet your various projection needs whether you are lying down or projecting on a table. Anti-slip grips ensure stability on any surface. Compact and lightweight, easy to carry in your bag, Perfect for enjoying movie night with family and friends anytime, anywhere.

[Netflix Officially & Electric Focus] Mini Projector with WiFi and Bluetooth, XuanPad 4K 1080P Support Portable Projector, 210° Rotatable Stand, Auto Keystone, Dust Removal and Heat Dissipation Design

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$229.99 @ Amazon.com

【Electric Focus & Auto Keystone】 Say goodbye to the tediousness and inaccuracy of manual focusing. YOWHICK projector for bedroom is an innovative product with upgraded electric focus and auto keystone functions. Enjoy instant electric -focus and crystal-clear images in seconds. Tip: Keep the projector as level as possible for the best results.

【4K Support & 20000LM】Elevate your viewing experience with our state-of-the-art projector featuring 4K support and native 1080P resolution! Immerse yourself in stunningly detailed images that bring every scene to life. With a remarkable brightness of 20,000 lumens, this projector delivers vibrant colors and crystal-clear visuals, even in well-lit environments. (100 inches projector screen included)

【WiFi 6 & Bluetooth 5.3】With latest dual-band WiFi 6 and 2.4G Connection, YOWHICK projector with WiFi and bluetooth enables you to have much smoother and lag-free online video streaming and gaming online experience when sync smartphone screens. Bluetooth5.3 support achieves you various Bluetooth speakers and headphones immersive sound experience.

【450'' Display & Zoom 50% & Built-in Subwoofer Speaker】This outdoor projector with screen offers a display 40"-450", 4:3/16:9 aspect ratio. 50-100% Zoom function and 15°auto keystone correction, let you get the best viewing effect whether in home theater or an outdoor movie. High-fidelity speakers allow you to enjoy great stereo surround without connecting to Bluetooth.

【Multiple Devices Compatibled】This home theater projector built in HDMI/USB/VGA/AV/Audio ports, makes it easier to connect iOS&Android Phone, TV sticks, USB Disk, PCs, laptop, MacBooks, DVD player, PS5, Game consoles, External Speaker

[Electric Focus] Projector with WiFi and Bluetooth, 20000LM Native 1080P Projector with Screen, YOWHICK Portable Movie Smart Projector, Home Projector 4K Supported for Phone/TV Stick /HDMI/USB Grey

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$269.99 @ Amazon.com

[Electric Focus & Auto Keystone] Projector 4k is equipped with electric focus and auto keystone correction. The remote uses the latest infrared high-precision sensor so you can effortlessly achieve a perfectly clear image with just a click. Whether you're in the living room, bedroom, backyard, school, conference room, or even at a party, setting it up is a breeze! This bluetooth projector is also the perfect gift for birthdays, Christmas, or New Year celebrations!

[WiFi 6 & Bluetooth 5.3] Our outdoor projector boasts a robust WiFi 6 connection, facilitating seamless linking to your cell phone or computer, ensuring immediate and steady transmission. and bluetooth projector also features powerful built-in 2* 5W HiFi speaker and supports Bluetooth 5.3 connection, realizing high-speed and stable two-way audio transmission. Ideal for thoes who prefer a big screen movie/game experience

[4K Support & 650ANSI Lumens] With native 1080P resolution, 650 ANSI brightness and 20000:1 high dynamic contrast ratio, SOPYOU projector 4k provides high clarity, contrast, and rich color images. Not just for nighttime - enjoy clear images even in ambient light. Whether you need a projector for movie watching or presentations and gaming, our movie projectors is the perfect choice. Ideal for both indoor and outdoor use

[Screen Size up to 450'' & Support PPT] SOPYOU projector supports PPT playback and can project up to a massive 450 inch, With a 1.1:1 throw ratio, at the same distance, our projector can project a larger and clearer picture compared to other traditional proyectors. Aspect ratios of 4:3 and 16:9, zoom capability from 50% to 100%, making it an ideal choice for both home theaters and professional settings

[Customized Viewing Bliss] Elevate your viewing experience with the projector's intelligent personalization settings, empowering you to meticulously tailor image modes, brightness levels, and wallpapers to your preferences. The unique companion mode enhances user interaction, transforming this 4K projector into a versatile powerhouse for both entertainment and productivity

[Wide Compatibility] Equipped with HDMI, USB,AV and 3.5mm audio port, our movie projector can easily connects to your phone, laptop, PS5, Switch, and more. With Wi-Fi6 technology, you can easily display the screen of your devices without extra adapters or apps. (Note: Netflix, Amazon Prime Video, Hulu, and some similar apps do NOT support screen mirroring due to copyright protections.)

[Electric Focus/Auto Keystone] Projector with WiFi and Bluetooth, 650 ANSI Native 1080P 4K Support Outdoor Movie Projectors Max 450" Display, SOPYOU Home Theater Projector for iOS/Android/TV Stick

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$75.99 @ Amazon.com

【Unique Appearance】: Our exterior design team has conducted extensive market research and collected many user preferences, taking 2 years to carefully create this home projector; The unique appearance, like the retro style of Bluetooth speakers, is not only a hidden TV and speaker, but also a decoration, making your home (room) more atmospheric.

【Quick Electronic Focus】: Say goodbye to the hassle of manual focus adjustment. With our remote control, you can effortlessly fine-tune the focus within 2 seconds, ensuring a clear and sharp image every time.

【4K Support & 180ANSI】: Immerse yourself in stunning visual detail with support for 4K video, complemented by a native display resolution of 1080P. Enjoy vibrant and vivid visuals, courtesy of our phone projector's 180 ANSI brightness paired with 1080P image quality. Whether you're watching movies, gaming, or giving presentations, every scene will be illuminated with exceptional clarity.

【5G WiFi 6 Connectivity】: TMY P28 projector with WiFi and Bluetooth integrates 5G WiFi and WiFi 6 technology for rapid and stable screen mirroring. Experience smooth and lag-free streaming of your favorite content directly onto the big screen.

【Dual Bluetooth Connectivity】: This video projector combines versatility with the convenience of dual Bluetooth functionality. Not only can you pair external Bluetooth speakers for enhanced audio immersion, but you can also use the projector as a standalone Bluetooth speaker, effortlessly streaming music from your smartphone.

【Timer Shutdown Feature】: Take control of your tv projector's power usage with the built-in timer shutdown feature. Set your preferred shutdown time anywhere from 0 to 24 hours, allowing for convenient automated operation. Experience the future of home entertainment with our feature-packed tv projector. Elevate your viewing, gaming, and streaming experiences with unparalleled performance and convenience.

【Electric Focus】4K Projector with WiFi and Bluetooth, TMY Portable Projector with Zoom Function, Movie Projector for Phone/TV Stick/HDMI/USB/Laptop/DVD/PS5, Mini Projector for Bedroom or Outdoor

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$109.99 @ Amazon.com (Save 15%)

Ultra-fast Dual-band WiFi 6 and Android 11.0: Our PR07 projector has built-in WiFi 6 and dual-band 2.4G+5GHz WiFi connections, which are more stable than single-band connections and smoother projection. With Android 11.0 system, you can dive into a universe of entertainment with access to apps right from our projector, featuring popular streaming services such as Netflix, Prime Video, and YouTube

Electric Focus and Automatic Vertical Keystone Correction: Compared with projectors that use gears for manual focus, our projector's remote control electric focus is more convenient, and the projector is better sealed to prevent dust from entering the portable projector. Plus, advanced automatic vertical keystone correction and built-in sensors immediately adjust to any movement, ensuring perfect alignment.

Built-in Bluetooth 5.3 and Stereo Speakers: The PR07 projector has an upgraded two-way Bluetooth 5.3 built-in, you can connect to headphones and wireless speakers via Bluetooth to enhance the audio quality. Of course, the built-in stereo speakers in our projector can also provide you with cinema-level sound effects, allowing you to start a special home theater anytime, anywhere

360° Adjustable Stand and Support HD 1080P Decoding: The projector has an innovative 360° rotatable stand, allowing you to place the projector anywhere for projection - such as tables, stools, sofas and outdoor grass, etc. The PR07 projector has a native 720P resolution and supports 1080P decoding, and the high brightness provides you with vivid colors and clear images. Let you experience the best film and television effects of the projector whether indoors or outdoors

Mini Projector and Portable: The PR07 portable video projector features a compact design, with the projector measuring only 6.69 x 4.9 x 2.64 inches and weighing only 1.4 pounds. Slightly larger than the palm of your hand, the PR07 projector is easy for even a child to pick up. For added convenience, the PR07 portable projector can be easily put into a handbag

High Cost-effectiveness and Compatibility: It costs thousands to buy a 200-inch TV, but it doesn't cost to buy a portable projector. While being more convenient, our PR07 projector is equipped with HDMI / USB / 3.5mm headphone jack ports, compatible with TV Stick, DVD, laptop, USB flash drive, computer, headphones, external speakers, smartphones, PS4/PS5, etc

【360° Adjustable Stand】Mini Projector with WiFi and Bluetooth, Electric Focus & Auto Vertical Keystone Correction 1080P HD Support Portable Home Theater, Compatible with Android/iOS, Laptop, HDMI

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$55.99 @ Amazon.com (Save 20%)

【Projector with Electric Focus & Digital Keystone Correction】The upgraded V7 mini projector is equipped with Electric Focus, which makes it easy to focus from remote control, up to 20 focus steps per second make it more accurate than the traditional manual focus. The Digital Keystone Correction and Zoom from 100% to 75% are designed to obtain a rectangular image and adapt well to the screen size for front/wall/ceiling projection.

【Faster 5G WiFi & Bluetooth Connection】 Equipped with the latest 2.4G/5G WiFi & Bluetooth Chip, this YEZMEK projector with wifi and bluetooth provides not only faster WiFi connection with the most iOS and Android devices, but also more stable signal transmission channel. Meanwhile, it’s also possible to connect Bluetooth soundbar, speaker or earphone to this projector via the Bluetooth function to get a better sound quality for your home theater needs indoors and outdoors.

【Native 1080P Full HD & 400 Ansi High Brightness】Built-in Native 1080P Full HD screen, this portable outdoor projector reproduces a clear, vivid and colorful image on the big screen; With the high quality light bulbs and advanced heat dissipation technology, we have improved the brightness and sharpness performance 30% more, decreased the product size 25% less and noise 60% lower compared to other projectors at the same price range. The lamp life is also extended to 90,000 hours.

【Higher Color Saturation & User Customization】Featured with the upgraded 3LCD color processing chip, this model of YEZMEK movie projector has improved the contrast ratio to 10000:1, thus increasing the color saturation 75% more compared to similar products on the market. The provided user customization mode works to restore more intricate color details according to the film background and usage environment, which presents our customers a real, dynamic and color vibrant projection image quality.

【Wide Compatibility and Application】Equipped with HDMI, USB, TF, AV, Type-C and 3.5mm Aux ports, as well as an HDMI and AV cable, this portable projector supports a variety of devices like TV Stick/Box, Game Console, PCs, Smartphone & Laptops, DVD player, TF card and USB Sticks etc. Set up your own home cinema proyector and enjoy a 36 to 300 inch large screen viewing experience at a projection distance from 1.2m to 5m.

Projector with WiFi and Bluetooth [Electric Focus & Keystone] 4K Supported, Native 1080P 16000 Lux 5G Mini Portable Outdoor Movie Projector Compatible with TV Stick, Smartphone, Laptop, HDMI, USB

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$249.99 @ Amazon.com

【Auto Keystone & Electric Focus】 Portable projector is equipped with auto keystone correction and motorized focus technology, which provides you with great convenience in using the projector. When "Automatic Trapezoid" is turned on, you will get a rectangular image in 2 seconds, eliminating the need for tedious manual adjustments. Electric focus allows you to get a clear picture in 2s, simply press the "F+" and "F-" buttons on the remote control, eliminating the need to manually rotate the focus ring and greatly simplifying the operation process.

【Full HD Native 1080P Projector & 300'' Giant Display】Movie projector features a full HD native 1080P resolution, support for 4K movie playback, which gives you high quality and exceptional clarity, restore the authenticity of color to the maximum extent. Excellent brightness 800 ASIN LM and 20000:1 high dynamic contrast ratio for brighter, richer images with sharper detail. Home projector provides 30-300 inches projection display, at 3.2-29.6 feet projection distance. The oversized screen is perfect for movie nights and backyard parties.

【Ultra-fast WIFI6 Connection】Home projector has WiFi wireless connectivity. 5G+2.4G dual-band WiFi technology, capable of receiving WiFi signals from 2 frequencies at the same time, provides greater flexibility and smoother, faster transmissions. So you can enjoy screen mirroring, movie and and gaming with your mobile devices. Easily project content from smartphones, tablets and other devices onto the big screen. Whether it's an HD movie or an office presentation, and instantly synchronize it.

【High-fidelity Stereo & Bi-directional Bluetooth Connection】Bluetooth projector has built-in 5W speaker with stereo surround sound, giving you a stunning and loud listening experience and enjoying a theater-like experience. Bluetooth projector can not only be paired with external speakers/stereos to enhance the audio effect, but can also be paired with a cell phone/computer to be used as a speaker.

【Wider Application】Outdoor projector has built-in HDMI, USB, AV and 3.5mm audio jack to connect with TV sticks, Roku, computers, laptops, tablets, external speaker, and USB flash drives. USB flash driver connection makes it easier to enjoy your videos and pictures or display your office documents in meetings. Supports desktop, ceiling and tripod mounting, strong compatibility, flexible use, to meet the immersive big screen experience of various occasions, is the perfect choice for home theater, outdoor camping, garden parties, camping and meeting.

[Electric Focus/Auto Keystone] Projector with WiFi and Bluetooth, Native 1080P 800ANSI 4K Supported,FUDONI Outdoor Movie Projector for Home Theater UP to 300", for iOS/Android/Laptop/TV Stick/HDMI/USB

[Electric Focus] Projector with Wifi and Bluetooth, 22000L Auto Keystone Outdoor Projector 4K Support, JOWLURK Native 1080p Movie Projector for iOS/Android/TV Stick/HDMI/USB/Laptop/PS5

$56.99 @ Amazon.com (Save 5%)

【Electric Focus & Keystone Correction】The projector adopts the latest electric focusing technology, saying goodbye to manual focusing. Just use the remote control's F+ or F- to adjust the focus with one touch, and obtain a clear image within 3 seconds. It is also equipped with manual keystone correction function, intelligently assisting you in better adjusting the position you want, easily solving the problem of image slant caused by placement.

【4K Supported & 15000L】The mini projector features native 1080P resolution and 15000:1 high dynamic contrast ratio, supports 4K, accurately reproduces every detail on the screen, ensuring a lifelike viewing experience, and is very suitable for watching movies, playing games, or viewing photos with amazing clarity. In addition, this mini 4K projector also uses diffuse reflectance technology to protect your eyes from fatigue.

【5G + 2.4G WiFi & Bluetooth 5.3】The portable projector with wifi and bluetooth is equipped with 5G + 2.4G dual-band WiFi connection, no need for cables, directly connect to IOS, Android, or Windows devices via WiFi to enter wireless projection mode. In addition to the built-in upgraded speakers, this smart projector also features Bluetooth 5.3 technology, allowing you to instantly wirelessly connect to your favorite Bluetooth headphones or speakers for faster and more stable audio synchronization.

【200" Big Screen & Wide Compatibility】The movie projector offers an image size from 40 inches to 200 inches, with a projection distance of 3.3 to 16.4 feet, allowing you to enjoy happy family cinema time indoors or outdoors with your family. In addition, this home projector is equipped with HDMI, VGA, AV, USB interfaces, compatible with TV boxes, TV sticks, PCs, laptops, tablets, USB flash drives, players, etc. It should be suitable for many environments, such as home theaters, video gaming, parties, outdoor activities.

【Portable Size & After-sales Service】This portable projector has a size of 7.08x5.3x2.7 inches, comparable to the size of a smartphone, and you can easily put it in your bag. In addition, the product packaging box has a handle for easy carrying. If you encounter any problems during the use of the product, please feel free to contact us, we will provide the most reliable customer service.

[Electric Focus] Mini Projector with WiFi and Bluetooth, Native 1080P Portable Projector Supported 4K, 15000L Outdoor Projector for Home Theater, Compatible with iOS, Android, TV Stick, HDMI, USB