The product is good, but does not record your performance. Once you have completed a training session and press the center button "stop", the watch "resets" and displays the time. You can not therefore review the history of your performance. Otherwise, when you run, for example, you can see your pulse, your time, which is a good point. Overall, the price / quality ratio is good, but I advise you still add 15 and offer you the range above.