Bought this as Fitbit do not seem to want to support my Fitbit One's ability to sync to Apple products. Good points are that it is fairly unobtrusive and quite delicate and it shows activity levels etc. However I have had it just over 2months and have already had to replace the batteries. I thought they were meant to last 6months to a year. I have just come in from a fairly fast paced hour long walk and went to synch it and found that it had somehow turned itself off overnight and not recorded anything. I now thing that I need to synch it at least 3 times a day in order to check it is working,which will further deplete the battery!