From the manufacturer

4K Ultra HD Resolution

Experience incredible detail with 4X the resolution of 1080p Full HDTVs.

1. 

   Quantum Dot Technology with UltraWide Color Gamut

   Enjoy over a billion colors for richer and more lifelike images.

2. 

   High Brightness Direct LED Backlight

   Q6 produces brighter images for enhanced viewing experience for all your favorite movies & TV shows.

3. 

   Motion Rate 120

   Motion enhancement technology for improved motion clarity.

1. 

   HDR PRO+ (Dolby Vision, HDR10+, HDR10, & HLG)

   Enjoy enhanced contrast, accurate colors & fine details utilizing all the most advanced HDR formats.

2. 

   Fire TV Built in

   Just press and ask Alexa to find, launch, and control your content.

3. 

   Auto Game Mode (ALLM)

   Automatically enables game mode for the lowest possible input lag and latency.

Compare TCL TVs

Q650F	S450F	S350F
Resolution 4K Ultra HD	Resolution 4K Ultra HD	Resolution 1080p Full HD
Display Direct LED	Display Direct LED	Display Direct LED
HDR HDR PRO	HDR HDR	HDR N/A
Dolby Dolby Atmos	Dolby Dolby Atmos	Dolby Dolby Digital+
Voice Remote Included Yes	Voice Remote Included Yes	Voice Remote Included Yes