The LG OLED55C4 is a 55-inch class (54.6-inch diagonal) 4K UHD OLED television featuring over 8.3 million self-lit pixels that deliver perfect blacks and luminous colors with 100% color volume and 100% color fidelity. The display offers 4K Ultra HD resolution (3840 x 2160) with a 120Hz native refresh rate and Brightness Booster technology that magnifies each pixel for radiant picture quality.

Powered by the Alpha 9 AI Processor Gen7, this smart TV provides smooth, crisp picture and sound with AI Picture Pro and AI Super Upscaling that automatically enhances content quality regardless of source. The processor delivers less than 0.1ms response time and supports up to 144Hz variable refresh rate for gaming, with NVIDIA G-Sync, AMD FreeSync Premium, and VRR compatibility. Four HDMI 2.1 inputs support 4K 120Hz, eARC, ALLM, and QMS, while three USB 2.0 ports provide additional connectivity.

The C4 series brings cinema-quality experiences home with Dolby Vision for extraordinary color, contrast and brightness, Dolby Atmos for immersive 3D sound, and FILMMAKER MODE that displays content as directors intended. The 2.2 channel speaker system with down-firing speakers delivers Alpha 9 AI Sound Pro with virtual 9.1.2 up-mix, Clear Voice Pro with auto volume leveling, and WiSA Ready support for wireless multi-channel audio. Wi-Fi 6E provides next-generation wireless connectivity, complemented by Bluetooth 5.1 and Ethernet input.

Running on webOS 24, the TV offers intelligent voice recognition with built-in Amazon Alexa and Google Assistant, plus compatibility with Apple AirPlay 2, HomeKit, and Chromecast. LG Channels provides access to 300+ free channels alongside premium streaming services including Netflix, Max, Disney+, YouTube, Prime Video, ESPN, and Apple TV. The webOS Re:New Program ensures up to 5 years of software updates and feature refreshes. Additional smart features include Multi View split-screen capability, Game Optimizer dashboard, USB camera compatibility, and Matter smart home integration.

The ultra-slim design features an almost invisible bezel for a seamless look, measuring just 1.8 inches deep without the stand. The included 18.5-inch wide stand brings total dimensions to 48.1" x 29.8" x 9.1" (WxHxD), with a total weight of 35.3 pounds. The TV is VESA 300 x 200 compatible for wall mounting. It includes a Magic Remote with NFC technology, power cable, and quick start guide. Energy consumption is 113.9W during operation with annual consumption of 211 kWh. The television is manufactured in Mexico and comes with a 1-year limited warranty covering parts and labor. Costco bundles this model with an AllState 3-Year Protection Plan for a total of 5 years of coverage when combined with the manufacturer warranty.