Polar M400 sports watch. Used for approx 8 months.

This sleek GPS trainer and activity tracker lets you recruit your phone to your coaching team. With the Polar Flow mobile app and web service, you can plan, sync and share your training. Polar Flow guides you through your workout, telling you when to speed up and when to take it easy, and keeps you motivated with instant feedback. It lets you create tailored views for running, cycling and 20 more sports, so you only see the stats you want to focus on. Sport- specific algorithms estimate calories burned. If you’ve run a little too wild, the back-to-start feature uses an internal GPS to indicate a direct line route to your starting point. The running estimator calculates how long it’ll take you to complete the remaining distance at your current pace, excellent for timing workouts or plotting race tactics