Multi-Functions: Dial, Message, Bluetooth, Remote Cameras, Alarm Clock, Steps Counting Pedometer, Sleep Monitor, Sedentary Remind, Anti-lost, Audio Player, Camera, Pictures, Recorder, Calendar, Calculator, Browser, Twitter, Facebook and so on.

Two Working Modes: First, Bluetooth Smart Phone Companion Mode: Without SIM card, you can connect watch with phone by Bluetooth, then you can make phone call, including answering and dialing through Bluetooth; Second, Independant Phone Watch Mode: If you install a 2G GSM micro sim card, you can make phone call directly from the smart watch, including answering and dialing and messaging etc

Synchro Function: Just scan QR code, download the BT APP, install and use the Syne software, then you can read SMS, view and reply text messages by the watch. The time and date, phone book, phone calling, musics playing and so on will be automatically synchronized.(APP does not support iPhone).

Bluetooth Mode: For Android phones - By downloading the app on your android phone and built the connection, you can reach functions like Bluetooth call/music, Call/Message Notification and camera remote capture on the watch, also support anti-lost; For iPhone - iPhone can't download the app, so functions are limited. iPhone can connect with this watch via Bluetooth to make/answer phone calls, play BT music.

The phone watch ONLY supports 2G GSM: 850/900/1800/1900, before buying, please double check with your Carrier if they are still supporting 2G. For US users, we recommend Speedtalk SIM by T-mobile, with $5 plan. As far as we know, Sprint and Verizon not supported, and AT&T has shut down 2G GSM networks. For other countries outside of USA, please double check with your local 2G GSM service suppliers.