I have bought other Revain refurbished devices and this has been one of the best so far. Now I have Fenix 3 and 5X. The Fenix 3 didn't have a heart monitor, but I like the design and feel. So we ordered this Fenix 5 and I love it even more. Both have been refurbished and both are still immaculate. The price was the reason I chose the refurbished unit and the Revain gives me no problems if something is wrong and I want to return it. I've had it for 5 months now and my biggest problem is the sync and the app. Previous Garmins haven't had this problem, but I need to hook it up to a PC to view the data. The Fenix 5x app is unusable. Previous Garmins did not have this problem. There are also TOO many buttons and still no information unless you sync to PC. It's funny and stupid. Can't use it on the fly.