It is very good brand and waterproof and battery is long lasting minimum 10 days is runing this battry I always use this watch it is very beautiful watch and that is introducted by xaimi ut is very helpful for A sports man/woman and price is very reasonable rs. 1700 only and it is available on amazon .com and Flipkart .com also it is very attractive watch. And most popular watch in india me and my friends also use that watch.