Build and program your own smartwatch
The nWatch is a wearable development platform in the shape of a smart watch. Based on an STM32 microcontroller, it is equipped with a full-color graphic touchscreen, MP3 decoder, position sensors, Bluetooth 4.0 and much more. A 3D printable watch enclosure design is availble too. What is realy cool about it is that it is an open source design that you can modify. Intended as a learning system, this project was one of the winners of the Elektor Fast Forward Award.