LG - 77" Class B4 Series OLED 4K UHD Smart webOS TV (2024)
Highlights
- Key Specs
- Display Type: OLED
- Resolution: 4K (2160p) (Refers to the number of pixels, both horizontally and vertically, used to capture video/images. The higher the resolution the finer the detail that can be seen.)
- Screen Size Class: 77 inches (The group size measurement of a screen. This differs from a screen size measured diagonally from corner to corner.)
- High Dynamic Range (HDR): true (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
- High Dynamic Range Format: Dolby Vision, HDR 10, Hybrid Log-Gamma (HLG) (There are a few HDR formats that tell the TV or other HDR-compatible product how to best utilize its capabilities to display HDR content. HDR technology can support one or multiple formats, each with various benefits to picture quality.)
- OLED Technology: Standard OLED
- Refresh Rate: 120Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Specific Manufacturer Technologies: α8 AI Processor (This is technology that's specific to a TV brand (sometimes called proprietary technology). Here you'll see terms related to picture quality, brightness, processors and more.)
- Smart Platform: webOS (Just like a computer, a smart TV needs an operating system (also called a smart platform) in order to access the Internet, connect with entertainment apps, and play streaming content. Some common TV smart platforms are; Roku TV, Android TV, and Chromecast.)
- Featured Streaming Services: Netflix, Max, Disney+, YouTube, Prime Video, ESPN+, Apple TV+, Sling TV (Streaming services and other programs are available on this device. Keep in mind, there may be more services supported than just those shown here.)
- Number of HDMI Inputs (Total): 4
- TV Tuner Type: ATSC, Clear QAM
- Works With: Amazon Alexa, Google Home, Apple Home (Compatible with or able to be connected to other smart devices or applications.)
- Voice Assistant Built-in: Amazon Alexa (A digital assistant built into the device that uses voice commands to answer questions and control smart devices.)
- General
- Brand: LG
- Model Number: OLED77B4PUA
- Product Name: 77" Class B4 Series OLED 4K UHD Smart webOS TV (2024)
- Series: OLED 4K - B4 (Part of a group of the same product type with similar features.)
- Model Year: 2024
- Dimensions
- Product Height With Stand: 41.6 inches
- Product Width: 67.7 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth With Stand: 12.6 inches
- Product Height Without Stand: 38.9 inches
- Product Depth Without Stand: 2 inches
- Product Weight With Stand: 51.8 pounds
- Product Weight Without Stand: 50.5 pounds
- Stand Width: 55.2 inches (The horizontal measurement of the stand/base, or the distance from the outside of one leg to the outside of the opposite leg, as it is attached to the product.)
- Stand Depth: 12.6 inches
- Adjustable Stand Width: false (Whether the stand can adjust to have more than one measurement either between the legs or the base itself.)
- Display
- Display Type: OLED
- Resolution: 4K (2160p) (Refers to the number of pixels, both horizontally and vertically, used to capture video/images. The higher the resolution the finer the detail that can be seen.)
- Screen Size: 77.8 inches (Size of the screen, measured diagonally from corner to corner.)
- Screen Size Class: 77 inches (The group size measurement of a screen. This differs from a screen size measured diagonally from corner to corner.)
- High Dynamic Range (HDR): true (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
- High Dynamic Range Format: Dolby Vision, HDR 10, Hybrid Log-Gamma (HLG) (There are a few HDR formats that tell the TV or other HDR-compatible product how to best utilize its capabilities to display HDR content. HDR technology can support one or multiple formats, each with various benefits to picture quality.)
- Picture Quality Enhancement Technology: Cinema HDR
- OLED Technology: Standard OLED
- Curved Screen: false
- Refresh Rate: 120Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Maximum Contrast Ratio (Native): Infinite (The difference between the brightest and the dimmest a screen panel can be. A higher contrast produces more in-depth images.)
- Synchronization Technology: G-SYNC Compatible (NVIDIA Adaptive Sync), FreeSync (AMD Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
- Closed Captioning: true (The text version of spoken audio displayed on the screen. Devices that can display closed captioning typically have the option to toggle the feature on or off.)
- Features
- Remote Control Type: Magic
- Specific Manufacturer Technologies: α8 AI Processor (This is technology that's specific to a TV brand (sometimes called proprietary technology). Here you'll see terms related to picture quality, brightness, processors and more.)
- Smart Capable: true (Smart, or smart-capable devices are able to connect directly to your home network in order to stream content from the Internet, run Internet-based apps, or connect to other smart devices.)
- Smart Platform: webOS (Just like a computer, a smart TV needs an operating system (also called a smart platform) in order to access the Internet, connect with entertainment apps, and play streaming content. Some common TV smart platforms are; Roku TV, Android TV, and Chromecast.)
- Featured Streaming Services: Netflix, Max, Disney+, YouTube, Prime Video, ESPN+, Apple TV+, Sling TV (Streaming services and other programs are available on this device. Keep in mind, there may be more services supported than just those shown here.)
- Screen Mirroring: true (Casts the screen of one device onto another wirelessly, using a common protocol (typically Bluetooth).)
- Screen Mirroring Technology: Apple AirPlay 2, Chromecast
- Content Sharing: Mobile to TV (The device is capable of connecting to another device in order to send or receive streaming content. Share content from your mobile device to your TV or vice versa.)
- Indoor Or Outdoor Use: Indoor (Indicates the appropriate environment product was designed to be used in.)
- Text-To-Speech: true (A system that converts language text into speech.)
- Video Description: true (Indicates whether the device features descriptive video service (DVS). This service provides narration of key elements in the program, such as actions, costumes, and scene changes, to help engage visually-impaired audiences.)
- V-Chip: false (Feature that blocks television programming if it has a content rating outside of the acceptable rating(s) configured by the user.)
- TV Tuner: Digital (The ATSC TV Tuner is a component built into conventional TV sets or other devices for receiving over-the-air broadcast TV without a cable/satellite box. Digital tuners may be purchased separately and connected to a device if it does not have one built in.)
- Connectivity
- Number of HDMI Inputs (Total): 4
- Display Connector(s): 4 x HDMI 2.1 (The number and type of connectors used to connect to an external display.)
- Network Connector(s): 1 x LAN
- Audio Only Outputs: 1 x Optical digital audio
- USB Ports: 2 x USB-A 2.0 (The number and type of USB ports the product has.)
- HDMI Audio Return Channel (ARC): eARC
- Wireless Connectivity: Wi-Fi, Bluetooth (The manner in which a device sends data to another device over a short distance without the use of wires or cables.)
- TV Tuner Type: ATSC, Clear QAM
- RF Antenna Input: true (This input is used to connect devices such as antennas or cable boxes to a TV via a coaxial cable.)
- Number Of USB Port(s) (Total): 2 (The total number of USB ports including all generations and versions.)
- Wireless Networking Standard: Wi-Fi 5 (The wireless networking standard used by the device. Each iteration of the standard developed by the Wi-Fi Alliance corresponds to an existing IEEE 802.11 protocol; for example, standard 802.11ac (or AC) is termed Wi-Fi 5. Refers specifically to the standard the device is designed to use, but ultimately determines product interoperability and backward compatibility including previous versions.)
- Bluetooth Version: 5.1 (The Bluetooth specification formalized by the Bluetooth Special Interest Group. All versions of the Bluetooth standard are backwards compatible with previous versions.)
- Headphone Jack: false (The device features an interface that allows for the connection of headphones.)
- Compatibility
- VESA Wall Mount Standard: 300mm x 200mm (VESA wall mount standards refer to the spacing of screw holes built into a TV in order to fit with standard TV wall mounts. These standards are implemented into most TVs and monitors.)
- Works With: Amazon Alexa, Google Home, Apple Home (Compatible with or able to be connected to other smart devices or applications.)
- Voice Assistant Built-in: Amazon Alexa (A digital assistant built into the device that uses voice commands to answer questions and control smart devices.)
- Audio
- Built-In Speakers: true
- Built-in Speaker Type: Downward firing (Backward, downward, and front-firing speakers direct sound into the room from those respective directions. A soundbar is typically long and rectangular, and designed to act as an all-in-one speaker with greater sound production than that of a TV alone. An acoustic surface is the result of small sound actuators embedded directly behind the screen, turning the entire screen's surface into a speaker.)
- Surround Sound Supported: Dolby Atmos (Surround sound systems use multiple audio channels and speakers to create an immersive sound experience for the listener. There are also various proprietary technologies that imitate this kind of sound via a device's built-in speakers or soundbar.)
- Number of Audio Channels: 2.0 (The number of discrete channels of sound output. This can be a single number or multiple numbers separated by decimal(s). The first number is the primary, horizontally directed audio channels. The number after the first decimal, if applicable, is the number of subwoofer outputs or channels. The number after the second decimal, if applicable, is the number of height or atmospheric channels designed to immerse the listener by producing overhead sound effects.)
- Power
- ENERGY STAR Certified: true (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
- EPEAT Qualified: false (The Electronic Product Environmental Assessment Tool (EPEAT) was designed to provide an environmental assessment tool for purchasers. In order to qualify for EPEAT, a product must meet all 23 required criteria.)
- Estimated Annual Operating Cost: 47 United States dollars (Predicted cost of operating the product under average conditions for one year.)
- Estimated Annual Electricity Use: 296 kilowatt hours (Predicted amount of electricity needed to operate the product under average conditions for one year.)
- Rechargeable Battery (Remote Control): false
- Battery Size (Remote Control): AA (The battery size required for operation.)
- Number Of Batteries Required (Remote Control): 2
- Number of Batteries Included (Remote Control): 2
- Battery Chemistry (Remote Control): Alkaline
- Included
- Wall Mount Included: false
- Stand Included: true
- Warranty
- Warranty - Parts: 1 year limited
- Warranty - Labor: 1 year limited
- Box Dimension
- Height: 44.5 inches
- Width: 74.8 inches
- Depth: 7.9 inches
- CubicDimension: 26296 inches
- Other
- UPC: 195174077221
The LG OLED B4 is a premium watching experience that offers more than meets the eye. Entertainment extras like Dolby Vision, Dolby Atmos¹ and FILMMAKER MODE give you the big-picture experience straight from your couch. Enjoy outstanding picture powered by the α8 AI Processor, which uses AI to detect what you're watching and automatically improves the picture and sound quality of whatever you're watching. Search less and stream more, thanks to the next generation of AI technology from LG webOS 24. With Quick Cards, group your favorite apps into categories and even have instant access to over 300 free channels with LG Channels.² All LG OLED TVs have NVIDIA G-Sync, AMD FreeSync Premium and VRR to further improve gaming quality. And four HDMI 2.1 inputs allow you to plug in all the devices you need for the win. Whether you game on consoles or on the cloud,³ the LG Game Dashboard and Game Optimizer put all the control at your fingertips.
- 8.3 million self-lit pixels: With OLED’s over 8.3 million self-lit pixels see perfect black and luminous color.
- Alpha 8 AI Processor: Alpha 8 AI Processor detects what you're watching and automatically improves the picture and sound quality.
- Dolby Vision, Dolby Atmos & FILMMAKER MODE: Enjoy movie magic from home with Dolby Vision, Dolby Atmos¹ & FILMMAKER MODE.
- Gaming: Packed with gaming features like NVIDIA G-Sync.
- 4 HDMI 2.1 inputs: Enjoy content from multiple sources with four HDMI 2.1 inputs.
- webOS, LG Channels & webOS Re:New: With webOS & LG Channels, browse your favorite streaming apps & view 300+ free channels. Enjoy up to 5 years of software updates with webOS Re:New.²
Whats Included
- 77" Class B4 Series OLED 4K UHD Smart webOS TV
- Table Top Stand
- Magic Remote (MR24)
- Remote Control Batteries (2)
- Power Cable (attached)
- Quick Start Guide
Product Manuals
Documents
- Energy_Guide_PDF
Disclaimers
- ¹Dolby, Dolby Vision, Dolby Atmos, and the double-D symbol are registered trademarks of Dolby Laboratories Licensing Corporation. Manufactured under license from Dolby Laboratories. Confidential unpublished works. Copyright © 2012–2024 Dolby Laboratories. All rights reserved.
- ²Internet connection and subscriptions to streaming services are required; number of LG Channels subject to change. Software update will automatically download. Consumers who disable “auto-update” will receive a pop-up notification to accept or deny software update.
- Web-based services and content require high-speed Internet service. Some services may require a subscription.
Q: How many HDMI inputs does this LG TV have?
A: This LG TV is equipped with four HDMI 2.1 inputs.
Q: Does this TV have built-in speakers?
A: Yes, this LG TV has downward-firing built-in speakers.
Q: What type of audio does this LG TV support?
A: This LG TV supports Dolby Atmos for an immersive audio experience.
Q: Does this TV come with a stand?
A: Yes, this LG TV includes a stand.
Q: What is the refresh rate of this TV?
A: This TV has a refresh rate of 120Hz.
Q: What is the screen size of this TV?
A: This LG TV has a screen size of 77.8 inches.
A: Hello there. Congratulations on your new LG OLED77B4PUA TV, and thank you for reaching out with your question. We understand how important it is to ensure your TV will fit perfectly on your console. The OLED77B4PUA has a central stand design, meaning the legs are positioned more towards the middle rather than at the edges. The distance between the legs is approximately 47.2 inches. Since your TV console is 60 inches, the TV should fit comfortably with some space on either side. If you have any further questions or need additional assistance, please don’t hesitate to send us a private message on social media @LGUSSupport. We’re here to ensure your setup is just right. —Renzo
Q: What are The Nitsm Brightness?
A: Thank you for reaching us regarding LG Smart webOS TV. The LG OLED77B4PUA is an OLED TV that claims to boost brightness by up to 70% compared to previous models, potentially reaching up to 2,000 nits of peak brightness. You can download its owner's manual through this link for more information: https://www.lg.com/us/support/product/lg-OLED77B4PUA.AUS. For additional assistance, please reach out to us on social media @LGUSSupport so we can help you further. ^Cris
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Reviews
Customers are saying
Customers are pleased with the excellent picture quality and how well the TV handles dark scenes. The OLED quality and 120Hz refresh rate also contribute to a fantastic viewing experience and ease of use. However, some customers expressed a desire for improvements to the remote control.
Customer Images
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
- Rated 5 out of 5 stars
Amazing picture quality
This television is incredible. The colors are bright and lifelike, and the black tones look deep and realistic. The screen is super thin, giving it a very clean and modern look. There is a bit of glare in bright lighting, but it does not bother me much. The new remote feels smooth and easy to use, almost like a small pointer. It is very responsive and intuitive. Watching movies and shows on this TV feels immersive and cinematic. I love how detailed and sharp the image is, and it completely transformed my living room.
Posted by ChristinaS
- Rated 5 out of 5 stars
Deep Blacks, Great Value - B4 77"
I've been using the LG OLED 77" B4 for about a month now. Before making this purchase, I was debating between a Mini LED and the C4 model. During the promotion, the B4 77" was $100 more expensive than a comparable Mini LED, but $600 cheaper than the C4 77". I didn’t consider the 65” models, and since I believe LG is the pioneer of OLED and I trust the durability of LG products, I didn’t look into other brands’ OLED TVs. When I compared the B4 and C4 side by side at Best Buy store, the C4 was noticeably brighter. However, I felt that the B4 still offered excellent quality for the $600 price difference. I had read some reviews mentioning that the B4 might feel a bit dim in bright rooms, and that did concern me a bit. But I installed this TV in my family room, and with the brightness set at 40%, I’ve been completely satisfied with the viewing experience. For reference, there’s a canopy in my backyard, so strong sunlight doesn’t directly shine into the family room. I love the deep blacks on this TV, and every time I watch Dolby Vision contents on Netflix, I feel reassured that I made the right choice. I definitely recommend this TV.
Posted by JasonL
- Rated 5 out of 5 stars
Next-Level Movie Nights with This LG OLED
I recently upgraded to the 77” LG OLED, and it’s been an incredible experience. The picture quality is stunning—deep blacks, vibrant colors, and excellent contrast, especially in dark scenes. Dolby Vision and HDR content look cinematic, and the 120Hz refresh rate makes gaming and sports super smooth. The built-in webOS is easy to use, with quick access to all major streaming apps. Sound is decent for a flat panel, but I paired it with a soundbar for the full experience. Overall, it’s a premium TV at a solid value—highly recommend for movie lovers and gamers alike.
Posted by Vrushali
