The Apple Watch Series 3 is your on-the-go athletic trainer. It is equipped with GPS plus cellular. When paired with a compatible iPhone and a service provider, you can leave your phone at home. The watch lets you receive calls and send texts. The Nike+ Apple Watch has a sporty black band and a 42 millimeter aluminum case. It offers Nike-exclusive watch faces, and it is compatible with the Nike+ Run Club app. Its battery lasts up to 18 hours.