Hi friend today I want to review on Mi brand 3 , which is purchase by me before 4 month from mi website through online .its battery quality is not so good.If brand is connect to my phone, phone battery is also low very quickly.it is not very useful for me.its show time, steps we walk and km we walk .it doesnot show how much calories we lost and it also doesnot show pulse rate and heartbeat.I think this band is not useful for anyone.thankyou