Support single SIM card; can act as a smart phone; you can also use its Bluetooth function to sync your Android/IOS/WP phone's calls/ call history/ phonebook/ SMS/ Email/ Music player/ Weather information ect. At the same time as a smart wearable device it can also works as: 1. Health pedometer 2. Sleep monitoring 3. Stopwatch 4. Alarm clock 5. Remote control for smart mobile phone camera 6. Smart phone anti-lost 7. Automobile anti-theft Anti-lost: Watch will alarm you if your mobile phone was stolen or leaving you out of 10 meters MP3/MP4 player/World time/Calendar/To to list/Alarm clock Sync incoming ring our watch will show you the calling ID and remind you by ringing or shaking can answer it directly by our watch keep no losing any calling 5. Sync SMS:(suitable for Android OS mobile phones)After install the APK in your mobile phone it will remind you when a new SMS coming and you can read it directly on watch GSM & Bluetooth Smartwatch with Touch Screen Lasts multiple days on a single battery charge GSM Cell Phone Bluetooth Dialer & Bluetooth Headset Music Player FM Radio Camera Alarm Clock Watch Pedometer Vibration Alert Features Overview: 1. Incoming call reminder. 2. Incoming call phone No. and name display 3. Synchronous phone book dial directly 4. SMS synchronous display (only for android phone) 5. Clock LED display 6. Mobile phone lost ring alert 7. Incoming call speaking via bluetooth 8. Stereo music play 9. Alarm reminder 10 Keep away from mobile phone radiation