Gear Fit2 SW has a lot of bugs yet. E.G. it doesn´t show calories burnt by indoor excercise (stationary bike, eliptical...). Next, really big issue, it doesn´t consider heart rate (excercise intensity) by calorie calculation. If you run like devil, or walk, calories will be same. I hope, Samsung resolves these issues very quickly, because Fit2 is very stylish, comfortable band with many advantages.