Model: H6603 (for 27-34 inch PCs) & H6604 (for 55-65 75-85 inch TVs) Immerse in Next-Gen Entertainment: Elevate your gaming setup with Govee AI Gaming & TV Sync Box Kit 2, now equipped with HDMI 2.1 for seamless 8K visuals at 60Hz and 4K at 144Hz. Experience vibrant 4-in-1 RGBWIC lighting, AI-driven effects, and reduced lag with VRR and ALLM support. Upgrade to a new level of gaming and entertainment immersion today! Upgraded HDMI 2.1: Adopting the latest HDMI 2.1 interface for data transmission, it enables screen and lighting synchronization, supporting up to 8K at 60Hz and 4K at 144Hz and providing a smooth, high-definition gaming experience. Supports VRR and ALLM: Reduces lag and screen tearing (i.e., FPS games and some RPGs) with a frame rate exceeding 120Hz. Industry-First AI-Chips: Deep AI learning from video content to trigger specific and immersive lighting effects. 4-in-1 RGBWIC Lighting: Four-color mixing ensures pure white light and accurate color blending for vibrant effects, making it better suited for game visuals. Upgraded Strip Light: With 75 LEDs and a brightness of 450 lumens every meter, the high-density light strip provides a brighter and more immersive experience. Note: Maximum performance (8K60Hz, 4K@144Hz) may vary depending on different screen types. The product may not support some screens using DSC technology. Please refer to customer service to check the compatibility of your screen.