1. 4G running memory, smooth operation comparable to mobile phone. 2. Built-in SIM card slot, HD calls and smooth internet access. 3. Bluetooth connection supporting music APPs. 4. Download and install massive APPs, feel the same experience as the mobile phone. 5. Support scanning code for payment and gently lift your hand to pay in seconds. 6. It can be arranged on the mobile phone and our watches also support it. 7. Built-in 1000mAh high capacity battery, optimize power consumption system. 8. Specification: - CPU: SL8541E - System: Android 9.0 - Battery capacity: 1000mAh - Navigation: GPS/BDS/Granas