Watch is accurate.Hearbeat and sllep tracker is very good.Software and sync is quite nice.Watch dials could have been more options.Watch dial is not so attractive.It counts each and every step accurately.Phone call notification is average.Music contol is not woring in my band.Its very comfortable to wear.Livhtweight and richmaterial.Bit costly but battery life gives me four full days in a two hours charge.Nice features.