Compatible with Mac OS X v10.3.9 or later, Windows Vista, or Windows XP (SP2) Home or Professional
Simply place the Nike+ Sensor under the sockliner of your left Nike+ ready shoe and start running to sync it with your Nike+ Sport Watch GPS, iPhone 3GS or other Nike+ tracking device.
Measures your pace, distance, time elapsed and calories burned.
Not compatible with iphone 6 and 6 plus.
One of the following: Nike+ SportWatch GPS powered by TomTom (sensor included and optional); Nike+ SportBand (sensor included); iPod nano and Nike+ Receiver; iPod touch 2G; iPhone 3GS, or iPhone 4