Like new, great condition A built-in accelerometer captures distance and pace data when you’re running on an indoor track or treadmill, with no need for a separate foot pod accessory. Once you’re done running, it doubles as an activity tracker counting your steps and calories throughout the day. It also reminds you to move after sitting for more than an hour. It is compatible with GPS to locate your position quickly and precisely whether you’re running deep in the woods or near tall buildings.