The TCL 55Q77K is a 55-inch Class 4K UHD QLED Smart TV featuring quantum dot technology that delivers 1.07 billion colors covering nearly the entire DCI-P3 color space. The TV utilizes a high-brightness LED backlight with an HVA panel and TCL AIPQ Pro processor to optimize color, contrast, and clarity.

This model offers a 144Hz variable refresh rate with a 120Hz native panel and Motion Rate 480 with MEMC frame insertion for smooth motion handling. It supports HDR PRO+ with Dolby Vision, HDR10+, HDR10, and HLG for enhanced dynamic range. Gaming features include Game Accelerator 240 supporting up to 240 VRR for lag-free gameplay and Auto Game Mode (ALLM) for automatic low-latency settings.

The TV runs on Google TV platform with hands-free voice control and includes a backlit voice remote. It features built-in Google Chromecast, Apple AirPlay 2 support, and works with Amazon Alexa, Google Assistant, and Apple HomeKit. Audio includes 2.0 channel speakers with Dolby Atmos spatial processing and Bluetooth personal audio capability.

Connectivity includes 4 HDMI inputs (one with eARC), Ethernet port, USB 3.0, RF input, and SPDIF digital optical audio output. The TV measures 48.2" W x 30.3" H x 11.5" D with stand, weighs 24.9 lbs, and supports VESA 300x300 mounting. The Costco bundle includes a 2-year manufacturer warranty plus an Allstate 3-year protection plan for 5 years of total coverage.