This pocket-sized device calculates and tracks six different metrics, including ground contact time, steps per minute, stride length, and vertical oscillation to give a complete view of your progress. This key data can be sent directly to your smartphone via the Garmin Connect Mobile app, enabling you to optimise your workout and improve your form so you can meet your goals and beat your Personal Best.·      Tracks and sends 6 running dynamics metrics to your compatible device·      Review and analyse form and running metrics - stride length, cadence, ground contact time and balance, vertical oscillation, and vertical ratio·      Lightweight and easy to wear - clips onto waistband, no chest strap needed·      Automatically turns on and off·      Replaceable battery lasts up to 1 year (assuming 1 hour daily use)·      Connect with the Garmin Connect Mobile app to automatically sync your data and connect with others·      Weight: 14g