This is the BluAlert, a bracelet with Bluetooth technology that will alert you when your cellphone rings. The BluAlert suppoers Bluetooth 1.2 and uses the 2.4GHz wireless frequency.
The BluAlert is also a security device. “Once paired with your phone, if it should suddenly find itself more than 5 meters away, BlueAlert buzzes. Not only will you never miss a call, you’ll never lose your phone.” The device offers 100 hours of standby time.