Pod 2

The Pod 2 is a running measurement device for running enthusiasts, from the brand Coros. 

This little box clips onto a shoe or belt to give you ultra-precise data on your runs. It pairs up with your watch via Bluetooth to send your data directly to your watch in near real time. The Pod 2 eliminates the 10-second delay caused by the wrist sensors on GPS watches.

As far as battery life is concerned, you shouldn't have any problems. In fact, its charge lasts up to 28 hours in continuous mode and up to 50 days in standby mode! A portable charging station is also included. 

Finally, if you want to improve your pace and distance measurements, look no further than this accessory. 

Only compatible with Coroswatches.