After several trips, I came to the conclusion that this watch is extraordinary! Integrated features (GPS, MP3, radio, touch and widely-read display, synchronized with iTunes music lists, ...), everything works perfectly. As for the timing of the races on the computer, it is immediately and provides a wealth of information. The website presentation of the results is also more accurate and complete than Nike for example. Also the ability to plan ahead a little complex training sequences such as an output of 1:30, with 3 times 10 minutes split interrupted by 2 minutes of rest ... all is well managed by the watch during output with verbal communication in real time as you, a real plus. In addition, it is very simple to set up and use. Another very good point: the equipment comes with the watch is complete. Wired headsets are comfortable and do not interfere at all the race, no need to invest in Bluetooth headsets. Really a very nice surprise, it is not the most -being "marketée" of the moment, but I think its - value is no real equivalent at the moment.