The GT08 SIM Card GSM GPRS Smart Watch for Android Cellphone is a fully functional timepiece with GSM and GPRS functionality. With a rectangular screen, it has a sleek modern watch design as well as a clear display. Insert the SIM card and turn it into a wearable cellphone; then you can make phone calls, send text messages and do a lot more. Small and lightweight, this smart watch is integrated with pedometer, calorie walking/running distance meter, and more. Soft silicone band is comfortable for long-term wearing.