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 S4 55S450, 139.7 cm (55"), 3840 x 2160 pixels, 4K Ultra HD, Smart TV, Wi-Fi, Black TCL S4 55S450. Display diagonal: 139.7 cm (55"), Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Screen shape: Flat. Smart TV. Response time: 8 ms. Wi-Fi. Product colour: Black