The Apple Watch Series 2 is a stylish offering that comes with all the hardware needed to track fitness in great detail. Its GPS tracks routes, distance, speed, and pace, whether walking or cycling, while a heart rate sensor syncs with the iPhone Health app, monitoring heart rates all day. The 50m water-resistant smartwatch also comes with a Workout app, which monitors and displays detailed information in real-time for 12 different workouts. It also provides coaching and nudges users when they are inactive for too long. Plus, access to third-party apps means the sky’s the limit.