I have been using this band since 1 year and I still feel that its baterry backup is good enough. Its give pricised and accurate heart pulse review . but only thing is that its doesnt have any display you have to connect this band with your band and only then you able to see your heart beat rating, how many hour you have been slept.
its price range 1000 to 1200. if you go to mi site then it cost you only 999 rs . since it has not any display its baterry backup is upto 30 days. so if you going to buy first smart band try this.