Model 3G/4G calling Smart Watch High Level Chipset MTK6572, Low Power Consumption 4G Not Support(Another Model Support) 3G Yes, WCDMA 2100MHZ (other bands optional) 2G(GSM) GSM 850/900/1800/1900MHz Display 1.54" IPS screen 240*240px Touch Support Capacitve Touch Screen, G+G Phone Call Support Sim Card Support Micro SIM Card Bluetooth Bluetooth 3.0 SMS Support SOS Alarm Support Voice Message Support Pedometer Support Remote Control Support Electronic Fence Support GPS Support Location GPS+BDS+WIFI+LBS Mic Support Speaker 8Ω/0.5W speaker x 1 Camera Front 2.0MP Battery Li-Ion Battery 450mAh, 3 Hours For Phone Call, 96 Hours For Standby Physical Buttons POWER ON_OFF Key, Phone 1, Phone 2 I/O Port Micro USB, SIM Card Slot Watch Size & Weight 38.2*45.8*17mm, 50g Colour Yellow, Blue, Pink Accessories: Simple Giftbox, USB cable, Manual Package Gift box Size 8.5*8.5*6.5cm, Weigth:150g