CPU:SC8541ECoretexTM-A7MP Quad-Cord CPU Flash Memory:RAM(2GB)+ROM(16GB) ddr3 Display:2.13 inch AMOLED rectangle screen, DPI:410*502 Touch Screen:Capacitive touch screen, touch IC: CST820, G+F structure Heart Rate Sensor:support\HX3918,High precision support for functions such as dynamic heart rate, blood oxygen, HRV, heart rate optical live body recognition, etc Camera:Support Pedometer:support/triaxial accelerometer RF Frequency Bands: GSM: B3+B5+B8 WCDMA: B1+B5+B8 LTE-FDD: B1/B3/B5/B7/B8/B20 LTE-TDD: B38+B39+B40+B41(100M) WIFI:Support\2.4GHz, Support 802.11b/g/n BT:Support V4.2 BLE GPS:Support GPS Shell Materials:Spray PC+Zinc alloy decoration Bottom Shell:PC+double-shot molding craft Strap Materials:replaceable straps/Silicon Colour:black Battery:930mAh large capacity polymer battery Button:Two keys,One Power key,One Back Key Charging:Magnetic charging SIM Type:Support Nano SIM card,to be inserted from watches' side Speaker:0615 Speaker Mic:Support Motor:Support 0720 motor Waterproof:IP67 OS:Android 8.1