Important Notice:If you don't insert the sim card.You (Can not Dial)!If only connected with Bluetooth functions:See messages contacts whatsapp twitter facebook etc. information and sync sports data.(Can not Dial)</br>CPU: MTK6580 Quad Core 1.3GHz1GB RAM and 8GB ROM memery 450 mAh battery.</br>HD Screen:1.63 inch large screen320*320 HD resolution Large touch-screen more accuratehigh quality displayenjoy smart watch life.</br>Smart watch wider connectivity support SIM CardWiFi3G NetworkWCDMA mode independent use smart watch with all function without smartphone browse internetuse facebook whatsapp ectkeep you online all time.</br>Health Monitoring: Heart and pedometor sensor high-precision GPS barometer calorie counter record daily activities and lead a healthier life.</br></br>Product Description</br></br></br><b>Parameters:</b></br>Brand: NO.1</br>Display: 1.63 inch Screen</br>Battery: 450mAh Built-in</br>CPU: MTK6580 Quad Core 1.3GHz</br>GPU: Mali-400MP</br>RAM: 1GB </br>ROM: 8GB</br>Battery: 450mAh Built-in</br>System: Android 5.1</br>RAM+ROM: 1GB + 8GB </br>Bluetooth: V4.0</br>SIM type: Nano Card</br>Functions: GPS/WiFi/G-Sensor</br></br><b>Network:</b></br>GSM: 850/900/1800/1900MHz </br>WCDMA: 850/2100MHz </br>Compatibility: Compatible with Android and iOS. Please note that some functions cannot support iOS for now</br></br>External Memory: Not Supported </br>Certificate: CE</br>Wireless Connectivity: 3G??Bluetooth 4.0??GPS??GSM</br>WIFI: 802.11b/g/n wireless internet </br>Network type: GSM+WCDMA </br>Frequency: GSM 850/90