Aside from telling us the exact time of day, this BMI Wristband Watch was develop to check the person body indices in a single gadget. These watch can show you BMI, Body Fat Percentage and Body ratio at the same time. Those indices help you understand if you have a healthy body or you need to loss more weight. It will also tell you where the fats in your body that you need to loss. People usually use BMI to judge the body weight however it is not good enough. We need to watch the body percentage at the same time when changing weights in order not to gain more fats.