It is compatible with four iPhone fitness apps:
Abvio’s Runmeter, Walkmeter, and Cyclemeter, as well as Wahoo Fitness, all available for download from the Apple App Store.
The sports watch can be used to check personal fitness data such as running pace and distance, elapsed time, pulse, cycling speed,and pedal rotations.
It also allows me to control itunes on my iphone when i'm out mountain biking, so I dont need to stop etc.
t's a bit of a gadget admitedly, but it works for me ....
I hope this helps,