AWOW Oak 3G WiFi Smart Watch Cell Phone with Android 5.1-Supports Nano SIM Card/GPS/Camera/Heart Rate Monitor/Google Map Google Play/Silver Android 5.1 OS: In Google play, it supports downloading many popular applications Powerful Perfermance: Quad Core 1.3GHz(MTK6580)/ROM 4GB/RAM 512MB/Camera 2.0MP/3G/Wi-Fi/BT 4.0/Build-in GPS Cell Phone: The smartwatch can independently make / receive phone calls with one Nano SIM card of 2G GSM 850/900/1800/1900, 3G WCDMA 850/2100 internet. And it can connect WIFI and bluetooth Healthy Monitoring: OAK Smart Watch supports high accuracy pedometer and heart rate monitor etc. It will help you to know your heart rate status anytime anywhere. Be your own immediate health steward. Enjoy your smart life Sports Design & Multifunctional: OAK Smart Watch Cell Phone uses aluminum watch case with anodic oxidation processing and CNC manufacturing. With 1.39 inch AMOLED, 400*400 circular capacitive touch screen, it can be as a MP3 player, Video player, Sound Recorder, Pedometer, Alarm clock, heart rate monitor, Remote Control, Anti lost, Message Reminder, all in one