I previously had the Fitbit Charge HR 2 and got this to replace it. I use it to track my daily steps/goals, runs, and sleep. I actually like this better than the Charge. The watch face is prettier, for want of a better word. I haven't bothered with the customisation because I like the default face. The width of the watch and band is good for my slim wrists, and I like the simple design of the clasp that doesn't get caught on things or have any parts that can break. Battery life is good, if you don't have too many options on that cause the watch to vibrate. It took me a while to work the app out - it's really not as intuitive as the Fitbit app - but I worked it out after some fiddling. The data I'm getting matches the Fitbit data so I think it's at least as accurate. Overall an excellent product for the price if you just want a simple fitness tracker.