Smart Watch,[U.S. Warranty]JoyGeek All-in-1 Bluetooth Watch Wrist Watch Phone with SIM Card Slot and NFC for IOS Apple iPhone,Android Samsung HTC Sony LG Smartphones(Silver) All in one,Smart Watch,Cell Phone Watch,Sync Watch in one watch.Insert Sim Card and use as a regular Cell Phone.Sync to Andriod or IOS smart phone and use as a smartwatch. View notifications from email, SMS, Caller ID, calendar and your favorite apps on your wrist. 1.54" TFT LCD 2.5D Radian Capacitive Touch Screen 240*240 pixels, OGS Laminating Process Function:Sport health,Pedometer,sedentary remind,sleep monitoring,Message Reminder,Call Reminder,Answer Call,Dial Call,Remote Control,Tow-way anti lost,NFC for quick pairing JoyGeek All-in-1 Smartwatch can also work with iPhone as a Bluetooth device(Means you can receive a call or make a call also sync your contacts to this watch via bluetooth).But Some functions like Notification Push,Remote capture,Anti-lost are currently unavailable on iOS because the iOS app is unavailable now