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Product Details

43" 4K UHD α7 AI Processor Gen8 webOS 25 + ThinQ AI HDR10 + HLG HDR10 Pro VRR + ALLM + HGiG AirPlay 2 + Cast 5-Year Updates (Re:New)

LG 43" UA77 Series 4K UHD AI Smart TV (2025)

A compact 43" 4K HDR smart TV platform with α7 AI optimization, webOS 25, and gaming-ready motion support

The LG UA77 43" Series (2025) delivers a high-impact 4K HDR experience in a compact footprint engineered for bedrooms, offices, and smaller living spaces. Powered by the α7 AI Processor 4K Gen8, UA77 applies real-time intelligence to optimize picture and sound for the content you’re watching, while HDR10 Pro and Dynamic Tone Mapping refine contrast and highlight structure for a more cinematic look. webOS 25 with ThinQ AI unifies streaming apps and built-in LG Channels, providing 350+ free channels for instant live viewing with minimal friction. Gaming capabilities include VRR and ALLM for smoother motion and reduced perceived latency, plus HGiG Mode and Game Optimizer tools for a more consistent HDR gaming pipeline. With Alexa, Google Assistant, Apple Home, LG ThinQ, AirPlay 2, and Google Cast support, UA77 integrates cleanly into modern smart-home environments. The Re:New platform program extends lifecycle value with 5-year software updates for ongoing feature and security coverage.

✔ 43" 3840×2160 4K UHD ✔ α7 AI Processor 4K Gen8 ✔ HDR10 Pro + HDR10/HLG ✔ webOS 25 + LG Channels (350+ free) ✔ VRR + ALLM + FreeSync + HGiG ✔ 5-year software updates (Re:New)

4K HDR Intelligence in a Space-Efficient Form Factor

UA77 is designed around core performance pillars that matter in everyday rooms: 4K clarity, HDR contrast enhancement, a modern smart platform, and low-friction ecosystem interoperability. The α7 AI Processor 4K Gen8 continuously optimizes picture and sound delivery, while HDR10 Pro plus Dynamic Tone Mapping improve highlight definition and shadow detail. webOS 25 consolidates discovery across apps and LG Channels for subscription-free live viewing. For gameplay, VRR and ALLM support smoother motion and reduced latency, complemented by HGiG Mode and Game Optimizer for quick HDR gaming alignment.

43"
Display
Compact placement
α7 Gen8
AI Processor
Real-time tuning
HDR10 Pro
HDR
Refined contrast
VRR/ALLM
Gaming
Smoother play

Gaming features and cloud gaming availability can vary by region, service, and device compatibility. Software update eligibility follows LG’s Re:New platform program terms.

Core Capabilities

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α7 AI Processor 4K Gen8 for Real-Time Optimization

The UA77 leverages LG’s α7 AI Processor 4K Gen8 to refine scene brightness, detail, and overall balance continuously, paired with AI-driven audio tuning to better match content type and viewing environment.

Processorα7 AI Processor 4K Gen8
OptimizationAI picture + AI sound
Resolution3840 × 2160 (4K UHD)
Panel TypeLCD

HDR10 Pro + Dynamic Tone Mapping for Scene-by-Scene Contrast

HDR10 Pro enhances perceived depth with refined color and contrast, while Dynamic Tone Mapping analyzes each frame to improve highlight structure and shadow visibility. FILMMAKER MODE preserves original cadence for creator-intent playback.

HDR FormatsHDR10 • HLG
HDR EnhancementHDR10 Pro
Scene ProcessingDynamic Tone Mapping
Creator ModeFILMMAKER MODE™
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Game Optimizer with VRR, ALLM, FreeSync, and HGiG

VRR and ALLM support smoother gameplay and lower perceived latency, while HGiG Mode targets more consistent HDR gaming behavior. Game Optimizer centralizes tuning for rapid adjustment across titles.

Refresh Rate60 Hz
Motion/GamingVRR • ALLM
SyncFreeSync™
HDR GamingHGiG Mode

webOS 25 + ThinQ AI with LG Channels and Ecosystem Interoperability

webOS 25 provides a modern interface with personalization and ThinQ AI intelligence, plus built-in LG Channels for free live content. Integrated support for Alexa, Google Assistant, and Apple Home, along with AirPlay 2 and Google Cast, enables frictionless control and sharing across devices.

Smart PlatformwebOS 25 with ThinQ AI
Free ContentLG Channels (350+ free channels)
CastingAirPlay 2 • Google Cast
Updates5-year software updates (Re:New)
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Key Features

A premium 43" smart TV foundation built for 4K HDR clarity, responsive gaming, and streamlined smart control

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43" 4K UHD Clarity

Visuals

Sharp 3840 × 2160 resolution in a compact form factor suited to smaller rooms and secondary displays.

4K UHD43"HDR-ready
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α7 AI Processor 4K Gen8

AI

Real-time optimization improves picture balance and audio tuning across movies, sports, and streaming content.

AI pictureAI soundGen8

HDR10 Pro + Dynamic Tone Mapping

HDR

Enhanced contrast realism with improved highlight detail and shadow gradation for more dimensional images.

HDR10 ProHDR10/HLGDTM
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Game Optimizer (VRR/ALLM/HGiG)

Gaming

Supports smoother play and reduced latency, with HDR gaming alignment and quick access to tuning controls.

VRRALLMHGiG
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webOS 25 + LG Channels

Smart

Modern interface with ThinQ AI personalization plus 350+ free live channels integrated into the platform.

webOS 25ThinQ AIFree channels
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AirPlay 2 + Cast + Voice Assistants

Ecosystem

Streamlined sharing and control across devices with Alexa, Google Assistant, Apple Home, and LG ThinQ support.

AirPlay 2CastSmart-home

Technical Specifications

Display & Video
Display Size43"
Panel TypeLCD
Resolution3840 × 2160 (4K UHD)
HDR SupportHDR10 • HLG
HDR EnhancementHDR10 Pro
Refresh Rate60 Hz
FILMMAKER MODE™Yes
Processing, Gaming & Smart
Processorα7 AI Processor 4K Gen8
Gaming FeaturesVRR • ALLM • FreeSync™ • HGiG Mode
Smart PlatformwebOS 25 with ThinQ AI
Software Updates5-year updates (Re:New platform program)
Cloud GamingGeForce NOW • Xbox Cloud Gaming support
PersonalizationPicture & Sound Wizard
Connectivity & Wireless
HDMI3 × HDMI
RF Input1 × Antenna
USB2 × USB-A 2.0
Digital Audio Out1 × Optical (TOSLINK)
WirelessWi-Fi 5 (802.11ac) • Bluetooth 5.1
EthernetLAN (wired)
CastingAirPlay 2 • Google Cast
Voice AssistantsAlexa • Google Assistant • Apple Home • LG ThinQ
Audio, Power & Physical
Audio2-channel built-in speakers
Power80 W typical • <0.5 W standby
VESA Mount200 × 300 mm
Dimensions (with Stand)38.1 × 24.4 × 7.9 in (96.8 × 62.0 × 20.1 cm)
Dimensions (without Stand)38.1 × 22.3 × 2.7 in (96.8 × 56.6 × 6.9 cm)
Weight (with Stand)19.6 lb
Weight (without Stand)19.4 lb
Packaging41 × 25 × 4 in (approx. 18 lb)
WarrantyLimited 1-Year Manufacturer Warranty
UPC195174102428

What’s in the Box

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LG UA77 43" 4K HDR Smart LED TV (2025)

4K UHD smart TV with α7 AI Gen8 processing, webOS 25, HDR10 Pro, and Game Optimizer tools

🎙️
Remote + Batteries

Remote control with built-in microphone and 2× AAA batteries

🔌
Power Cable

AC power connection

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Stand

Included feet/stand hardware for tabletop placement

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Warranty

Limited 1-Year Manufacturer Warranty

Smarter 4K in a Compact 43" Footprint

The LG UA77 43" Series (2025) is optimized for smaller spaces that still demand modern 4K HDR performance. The α7 AI Processor 4K Gen8 drives real-time picture and sound refinement, HDR10 Pro with Dynamic Tone Mapping elevates contrast realism, and webOS 25 with ThinQ AI consolidates streaming with built-in LG Channels for free live content. Add VRR/ALLM/HGiG gaming tools, multi-assistant smart-home integration, and 5-year software updates through LG’s Re:New platform program, and UA77 becomes a high-confidence entertainment hub for everyday environments.

43" 4K UHD α7 AI Gen8 HDR10 Pro webOS 25 VRR/ALLM 5-year updates

 

 

Included in the Box