Details Nikai 55-inch Smart 4K Web OS TV NIK55MEU4STN 55-inch ULTRA HD SMART LED TV Metal stand and frame (black metal) Panel resolution: 3840 * 2160 (4K * 2K) Casting and Miracast WEB OS - Operating System (like LG) Built-in WIFI DLNA, HDR, Quad-core processor 1.5GB RAM and 8GB Flash Drive Bluetooth DVBT2 S2 Dolby Digital Frameless design