Bas-Tek G4S Bluetooth Connectivity Touch Screen Smart Wrist Watch, space Grey Featuring a pedometer, built-in microphone, and speaker, this Bluetooth-enabled device is an ideal accessory for a technology enthusiast. Supports local call with built-in sim card and sync phone by Bluetooth 3.0, After connect with your smartphone, can make/receive calls directly.  Features:Screen: 1.22 inch IPS screen 240*204 pixel full touch screenBattery: 3.7V/380mAhGSM Frequency: Support sim card GSM 850/900/1800/1900MHz, GPRS/EDGELanguage: Multi-LanguageSync smart phone's phonebook and call historySync calls: ring to remind you there is a calling from other on watch and can answer from it directlySync SMS and Music: can read/send SMS, listen to music from smartphone on the watch directlySupport pedometer, Sedentary reminder, anti-lost, calculatorIn-Built Mic, Speaker, G-SensorSync time/Date, support Facebook, WeChat, WhatsApp, etc.