1) Operating System: Android 4.4.2; 2) Network mode: GSM + WCDMA; 3) screen size / pixel: 4.7 inches, 1280 x 720 pixels; 4) Battery capacity: 3500 mA (not removable); 5) machine Body Memory: 2GB + 32GB; 6) external memory interfaces: Micro SD, maximum support 32GB; 7) Camera: Front 500 million pixels, rear 13 million pixels; 8) Wi-Fi: IEEE 802.11b / g / n; 9) CPU type and frequency: MTK6592 eight-core 1.57GHz; 10) Zoom: 4x digital zoom; 11), intercom functions: full-band 400 ~ 480MHZ, transmitting and receiving frequency independent transmission distance 4-5 km, output power up to 1W ; 12) Waterproof grade: IP68;