Products you can control through Echo and Alexa-enabled Devices. Y Google Assistant is ready to help when and where you need it. Manage your schedule, get help with everyday tasks, control smart home devices, enjoy your entertainment, and much more. Y TCL 55S451, 55", 3840 x 2160 pixels, 4K Ultra HD, Smart TV, Wi-Fi, Black TCL 55S451. Display diagonal: 55", Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Screen shape: Flat. Smart TV. Native aspect ratio: 16:9. Digital signal format system: ATSC. Wi-Fi. Product color: Black