Choose the HUAWEI WATCH FIT 4 if you're looking for a lightweight smartwatch with many sport functions. This HUAWEI WATCH has a medium-sized 43mm screen where you can see all your smartphone notifications on. There are more than 100 work out profiles on it, from yoga to climbing and from surfing to running. The watch tracks all your sports performances, so you can improve them. That way, you know how you sleep, when you're stressed, and how much you move. The FIT 4 battery lasts 7 days on average. This means that you don't have to charge the watch often.