In the past few months, we have covered plenty of exciting Arduino projects. This Arduino Pedometer Watch, shared by benhur.goncalves, looks quite fun. It involves building a watch with a sensor board that has a compass, pressure/altitude/temperature sensors, an accelerometer, and a gyroscope. As the developer explains in the below video, the watch easily lasts over 24 hours on a full charge (depending on how you use it):
More information about this project is available here.