This watch has never worked as it should according to the technical specifications. Those like me who have bought this watch since June have found themselves with an unreliable device and where with each new update new bugs and broken features are introduced that were fine before, such as, for example, the detection of the anaerobic threshold or the training sessions scheduled on the track. How much longer do I have to wait to get what I paid for? Garmin says we are working diligently but patience has a limit and after 9 months it seems to me that the limit has been crossed. moreover, the warranty of this watch should at least start from when all bugs are fixed and not from the date of purchase