This training watch tracks your route, speed and distance with a built in GPS. The endurance program will guide you to improve your running/cycling performance. The fitness & running test will show you exactly how your fitness is developing and will let you know how many calories you burn. Connect the watch to your computer with the USB cable provided to charge the battery and to transfer data between the watch and the polarpersonaltrainer.com web service for a deeper analysis of your training. You can also create and download your own targets and Polar Endurance training programs onto your watch. Comes with a comfortable heart sensor which detects your heart rate accurately from the heart's electrical signals and sends the data to the watch in real time. This watch also features a backlight, date and weekday indicator, displays text in English, German, French, Spanish, Portuguese, Italian, Dutch, Danish, Finnish, Norwegian and Swedish, dual time zone, button lock, low battery indicator, rechargeable battery, time of day (12/24h) with alarm and snooze and is water resistant. Due to the personal nature of this product it cannot be returned once it is used.