It is one of the best fitness band out there in market
Its ipx 67 certified watch. Its battery life is amazing.
Only problem is that it lacks display. It is one of the best acurate band out there and its 1s model comes with heart rate sensor which is good.
Just go gor it. I wold rate it 10 on 10. Value for money product. But it is currently out of stock so you have to buy it on ebay or gearbest or aliexpress