Xiaomi TV Box 3 (Authentic- 2016 Version) 4K, Quad-core CPU, 802.11ac WiFi, Bluetooth 4.1 Xiaomi mi box proteo 3rd generation mi box from xiaomi, 2ghz quad-core a53 CPU & 3+2 coremali-750m 4k video support resolution up to 3840x2160, 4k video,4 times resolution then 1080p,support HDMI 1 Dual band 802.11ac wifisupport 2.4g/5g 802.11ac Wi-Fi protocol, downward compatible with 802.11 b/g