I think its an amazing buy for the price they offer. I bought Mi 3 a year back and have already been impressed by the Mi brand.And this Fitness accessory is like cherry on top of a cake.
Not only is it sleek, ease to use and fashionable, it is very durable and for the price they are offering , I do not think there is a better purchase.
Rather than buying the inaccurate pedometers for Rs. 300-400 , Save your money and buy this , because for a long run this one will survive.
The only con I can think of is not even related to the band , you see , you have to sync your phone with the band and bluetooth might drain some phones battery very quickly , but other than that its a great purchase : )