Casio GB-6900 G-Shock, Bluetooth 4.0 watch

Communicates with your Android smartphone that has an ultra low power Bluetooth 4.0 support. Battery life is about 2 years with Bluetooth synchronized to your phone 12 hours per day. It synchronizes with incoming calls, incoming SMS, with time zone changes, it can sound an alarm on your phone if you can’t find it. They are expanding the functionality to support other apps in Android.