LG - 77" Class B5 Series OLED AI 4K UHD Smart webOS TV (2025)
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OLED - B5 seriesScreen Size Class
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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.)
- Motion Enhancement Technology: OLED Motion (Proprietary technologies produced in addition to the Refresh Rate that smooth out faster moving pictures to reduce blur and pixelation.)
- Specific Manufacturer Technologies: Alpha 8 AI Processor Gen 2 (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, HBO Max, Disney+, YouTube, Prime Video, 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: OLED77B5PUA
- Product Name: 77" Class B5 Series OLED AI 4K UHD Smart webOS TV (2025)
- Series: OLED - B5 series (Part of a group of the same product type with similar features.)
- Model Year: 2025
- 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: 77.4 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: Dynamic Tone Mapping Pro
- 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.)
- Motion Enhancement Technology: OLED Motion (Proprietary technologies produced in addition to the Refresh Rate that smooth out faster moving pictures to reduce blur and pixelation.)
- 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: Alpha 8 AI Processor Gen 2 (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, HBO Max, Disney+, YouTube, Prime Video, 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, Google Cast
- 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.)
- 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 (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
- 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 6E (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: 5.3 (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: 55 United States dollars (Predicted cost of operating the product under average conditions for one year.)
- Estimated Annual Electricity Use: 344 kilowatt hours (Predicted amount of electricity needed to operate the product under average conditions for one year.)
- 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: 26295.94 inches
- Other
- UPC: 195174106143
The LG OLED B5 is a premium watching experience that offers more than meets the eye. You'll be able to keep pace with the action with a native 120Hz refresh rate for smoother movement whether you're gaming or watching sports. 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 25. 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.
- Alpha 8 AI Processor Gen2: Alpha 8 AI Processor Gen2 detects what you're watching and automatically improves the picture and sound quality
- Perfect Black & Perfect Color: Over 8.3 million self-lit smart pixels with Perfect Black and Perfect Color technology.
- Dolby Vision, Dolby Atmos & FILMMAKER MODE: Enjoy movie magic from home with Dolby Vision, Dolby Atmos¹ & FILMMAKER MODE
- Ultimate Game Play: Packed with gaming features like NVIDIA G-Sync and 120Hz refresh rate
- AI webOS, LG Channels, webOS & Re:New: LG’s Award winning Smart TV platform powered by webOS. Get access to apps & view over 300 free LG Channels. Plus get up to 5 years of software updates with webOS Re:New.⁴
- Personalized Picture / Sound Wizard: The Personalized Picture & Sound Wizard uses AI technology to analyze your favorite images and sound clips to create a personalized picture and audio experiences tailored for you.
Whats Included
- OLED77B5PUA
- Magic Remote (MR25)
- Remote Control Batteries (AAA x 2)
- Power Cable (attached)
- Quick Start Guide
- e-Manual
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.
- ³Subscription and compatible gaming controller are required.
- ⁴Internet 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: Does this TV include a stand?
A: Yes, this LG TV comes with a stand.
Q: What type of speakers are built into this TV?
A: This LG TV has downward firing speakers.
Q: Is this LG TV compatible with Amazon Alexa?
A: Yes, this TV is compatible with Amazon Alexa.
Q: Does this TV support Dolby Atmos?
A: Yes, this TV supports Dolby Atmos sound.
Q: How many HDMI inputs does this TV have?
A: This TV has 4 HDMI inputs.
Q: What is the refresh rate of this LG TV?
A: This LG TV has a refresh rate of up to 120Hz.
Q: Does this tv have four 2.1 hdmi ports.
A: Hi there. Thank you for sharing your inquiry with us regarding the connectivity of your LG OLED77B5PUA TV. We understand your question about the HDMI ports, and it is a great question, especially for those who enjoy high-performance gaming and media. We can confirm that your OLED77B5PUA TV is equipped with a total of four HDMI inputs, and all four of these ports fully support the key HDMI 2.1 features. Here is the simple and direct specification for the connectivity on your unit: HDMI Input: 4ea (supports 4K 120Hz, eARC, VRR, ALLM, QMS (4 port)) This is beneficial because it means you can connect multiple next-gen devices, such as gaming consoles and PCs, and experience advanced features like 4K resolution at a 120Hz refresh rate, Variable Refresh Rate (VRR), and Auto Low Latency Mode (ALLM) across all four ports. https://www.bestbuy.com/product/lg-77-class-b5-series-oled-ai-4k-uhd-smart-webos-tv-2025/JJ8VPZTKZW Your feedback is important, and we'd like to assist you further. If you have any further questions about how to best set up your devices or other features, please send us a private message on Social Media @LGUSSupport, and our team will be more than happy to assist you. —Renzo
A: The LG 77" Class B5 Series OLED AI 4K UHD Smart webOS TV (2025), Model # OLED77B5PUA, has an excellent viewing angle of about 70° from the center. OLED TVs are designed to maintain image quality at various viewing angles, making them ideal for group settings with spread-out seating...^Ivan.
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The LG OLED B5 is a premium watching experience that offers more than meets the eye. You'll be able to keep pace with the action with a native 120Hz refresh rate for smoother movement whether you're gaming or watching sports. 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 25. 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.
The advanced LG OLED evo C5-Series is better than ever. The LG OLED evo C5 is powered by the next-gen Alpha 9 Gen8 AI Processor —exclusively made for LG OLED—for ultra-realistic picture and sound along with boosted brightness for luminosity and high contrast, even in well-lit rooms. AI-assisted deep learning analyzes what you're watching and uses your preferences to choose the best picture and sound setting for your content. The C5's almost invisible bezel, ensures it blends with your surroundings. When you're finished watching, display art, photos and other content make the C5 a versatile statement piece. Search less and stream more, thanks to the next generation of AI technology from LG webOS 25. Every LG OLED comes loaded with Dolby Vision for extraordinary color, contrast and brightness, plus Dolby Atmos¹ for immersive sound you can feel all around you. FILMMAKER MODE allows you to see films just as the director intended. Packed with gaming features, the LG OLED evo C-Series comes with everything you need to win like a 0.1ms response time, native 120Hz refresh rate, with VRR for PC gaming and four HDMI 2.1 inputs.
Take full advantage of Samsung Vision AI with enhanced picture and sound upscaled to 4K quality, plus experiences uniquely tailored to you - whether you're streaming your favorite show, gaming with friends, or watching live sports. And with access to free, premium channels, there's always some thing great to watch - in vivid detail brought to life by proprietary Mini LEDs.
Self illuminating pixels deliver bright, expert validated color and the dramatic contrast of OLED, driven by our advanced AI processor. Experience a stunning picture with enhanced brightness and depth, all in a sleek design with a thin bezel. Dive into your content with Samsung Vision AI experiences and immerse yourself in multi dimensional audio with top firing speakers.
| Pros for LG - 77" Class B5 Series OLED AI 4K UHD Smart webOS TV (2025) | |||
|---|---|---|---|
| Picture Quality, OLED Quality, Setup Ease, Brightness, Black Level | Picture Quality, OLED Quality, Brightness, Setup Ease, Black Level | There were no pros for this product— | There were no pros for this product— |
| Cons for LG - 77" Class B5 Series OLED AI 4K UHD Smart webOS TV (2025) | |||
| Connectivity | Connectivity, Remote Control | There were no cons for this product— | There were no cons for this product— |
Specs
- LG - 48" Class B5 Series OLED AI 4K UHD Smart webOS TV (2025)$649.99The price was $1,299.99
- LG - 65" Class C5 Series OLED evo AI 4K UHD Smart webOS TV (2025)$1,399.99The price was $2,699.99
- LG - 77" Class G5 Series OLED evo AI 4K UHD Smart webOS TV with One Wall Design (2025)$3,299.99The price was $3,799.99
Reviews
Customers are saying
Customers praise the 77" Class B5 Series OLED TV for its exceptional picture and OLED quality, highlighting the deep blacks and overall visual experience. The TV is also appreciated for its sleek design and ease of setup. However, some customers have noted difficulties with switching HDMI inputs.
- Picture Quality (282)
- OLED Quality (58)
- Setup Ease (19)
- Connectivity (4)
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 4 out of 5 stars
Beautiful colors
This TV is absolutely gorgeous. Coming from a plasma with great inky blacks I did not want to upgrade at all but I am glad to have gone OLED. And don't let the "entry level" tag placed on this tv fool you, it's OLED through and through. Beautiful colors and deep pure blacks. And with the right settings, the picture is natural and sharp. I am beyond happy. The speakers are way better than I would have ever thought. My only negative is that OS is sluggish. I like it better than some others but it's a little slow which is where the price probably comes in. But it's not bad enough for me to pay the difference for the next model up. Overall I highly recommend this TV for exceptional movie watching and gaming.
Hammer Posted
- Rated 5 out of 5 stars
Recommend
This LG OLED B5 AI 77” is absolutely worth it. The picture quality is stunning — deep blacks, vibrant colors, and excellent brightness for both movies and sports. Dolby Vision and HDR really make a huge difference. The motion handling is smooth, perfect for fast-paced action or gaming. The AI processor does a great job optimizing the image and upscaling lower-resolution content. Sound is surprisingly good for a slim TV, but pairing it with a soundbar takes the experience to another level. The design is sleek and modern, and it looks beautiful mounted on the wall. WebOS is very fast and user-friendly, with all the apps I use (Netflix, Prime, Apple TV+, YouTube) running smoothly. Overall, an excellent purchase — premium quality at a great price. Highly recommend it if you’re looking for a large screen OLED with amazing performance.
EliudV Posted
- Rated 5 out of 5 stars
Great Picture
We bought this to upgrade from a seven year old LG 65” 4K LED tv. The difference is amazing. This 77 inch 4K OLED LG has a noticeably better picture, blacks are blacker, and colors are more vivid. The new style magic remote is definitely an upgrade. The TV was delivered and installed by Best Buy. They did a wonderful job on the installation as well as explaining the features. They installed an in wall wire kit and did a professional job. I bought this during the Black Friday sales and saved almost 50% off the list price. I’ve used Best Buy for years and plan to continue using them in the future.
Unhappy Posted
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