Run with music, not with your phone Play over 500 songs from your GPS running watch. Store your playlists on your watch & play them wirelessly during your run. Track all your sports Mix up your training. Run. Gym. Bike. Swim. Treadmill. Freestyle. Track different sports with dedicated modes on your GPS running watch, & make them all count! Run smarter with real time information Just look at your GPS running watch to get live stats on the go. Time, Distance, Speed, Pace, Calories burned & more. So you know when to push it – or when to shift it down a gear. Never run the same route twice Run Free. Explore new areas & find your way back with your trail shown on your wrist. You can also upload new routes to your Tom Tom Runner 3 GPS watch, & then follow them to discover new places with complete confidence. Sync your stats with Tom Tom My Sports Sync, store, share & study your activities on the Tom Tom My Sports App, or in any of your favourite apps like Strava, Runkeeper, Map My Fitness, Nike Plus or Endomondo. Track your activity 24/7 Life is more than just a run. Thats why Tom Tom Runner 3 GPS watch tracks your heart rate, steps & sleep. Throughout the whole day. Not sure what size you need. Check the sizing guide here