Lemfo LF07 Bluetooth Smart Watch 2.5D ARC HD Screen Support SIM Card Wearable Devices SmartWatch for iOS Android Type:Smart Watch 2G:GSM (900/1800 MHz) SIM Card Type:SIM Card Operating System:Android Any question, drop us a line and we will try our best to help. Please kindly do not leave any neutral or negative feedback before contacting us. Thank you.