I just got my lenovo HW01 smart band and its seems so good.i just loved its feature and and all other functions .its design looks very nice battery backup is nice and I love most is that it gives fair idea on there health and dynamic heart rate tracker.its very user friendly any body can easily operate it its besically design for all kind of people. If any one go for feature like this for any other brand it will cost more then 2k basically but its comes under 2k so its one of smart choice for all.