It was a present for my brother, three months ago. I bought it to him because he told me that he needed a watch like this with an alarm (his doctor recommended him to exercise to low his high cholesterol levels). He was very happy when he first received it, but I have noticed he hardly use it.  Yesterday I asked him the reason. He said it indicates what the publicity of the watch advertises, but you can not hear the alarm!!!!!! So it is not useful for him. If you are exercising, it is logical that you make some kind of noise (he uses a static bike), and if the company offers an alarm they should have thought of making a loud one. If you are just sitting in a close and peaceful place, YOU DO NOT NEED TO  KNOW WHEN YOUR HEART GET TO CERTAIN RATE OR YOU GOT A DISTANCE GOAL!  My brother wrote the company and they simply replayed that he should have bought the one with vibrating alarm!!!!  JUST DO NOT BUY THINGS FROM THIS COMPANY.