W8 smart device, you can use it as a smart watch, also you can regard it as a small GSM phone. Plug in SIM card, then you can make phone call or message directly, of course, you can make a dial via Bluetooth without SIM card. W8 also has integrated with many functions: Built-in 0.07MP camera, remote camera, anti lost, pedometer, sleep monitor, music player and so on. Own W8, you own a loyal friend who will help you enjoy the smart life!Main Features:Large storage space: Support TF card extension up to 8GB, you can save data on W8.Dialer / Message: Make calls / messages in the smart watch directly (should install GSM SIM card), you also can make calls via Bluetooth.Anti-lost: Mobile phone looks for watch.Camera / Remote camera: You can use W8 to take photos by its built-in 0.07MP camera, or control your smart phone to take photos, you just need to touch the screen and then the photos are saved in your smart watch.Pedometer / Sleep monitoring / Sedentary reminder: Record your sports, monitor your sleep and remind you to get a little stretch after a long sitting.Music player / Video player: Play the music / video which is saved in the smart watch or smart phone.Call log / Contracts: You can check the calls history / contracts on the W8.Remote notification: Show the message from mobile phone terminal , such as: WeChat, messages, etc..