I have used this watch now for 6 months and it is very useful.

Features of this watch include a fitness program generator that is based on age, what you want to achieve and the Polar fitness test that takes five minutes. The test measures your heart rate and compares it to your personal details and it creates you a program that will suite you. It shows how many calories you have burnt, how what your average HR (heart rate) is and your max HR. It measures your HR using a wireless, fabric chest strap that is comfortable to wear. You can then transfer the data from the watch to a computer.     

Polar F11