Actually I love mi product because of its unique design and its look. it's look good in your hand. Using this product you can find your device. It's battery is too good.if you use it properly you have to charge it after 7 days. You can control this band by using a mobile app ( mi fit) . You can easily use because its full touch display.band strip are not good . You can use it under water . But under water you can face some issues with the touch.you can know how much cal you have burn out of the day and how much step. It's can count your sleeping time. Definitely it's value for money.