Hey friends, I have mi band 2. I buy this from amazon. I use this band since 6 months. I think it is not durable but when I start to use this band without any problem. I use this band every day. When I start use this band after 3 months I never purchase a watch. It has many function like time, heart beat, pulse, etc. It is very stylish band. Features are too nice. Battery life is very strong. Charge 4 hours and use for 12 hours! It is valuable for me.