I have been a runner for decades. I know my pace. The miles I run and the time it takes. This shows I run 5 minutes longer than real time. The pace is way off by about 2 minutes so the milage is way off. The shows I am riding a bike when I drive. I have had it 3 days and will not track my sleep. I bought the watch because I am go Oi ing to Japan for 10 days and need a long battery but this watch is so bad at what I want it for that I am returning it