What is pleasant with Omron devices is that they are well thought out and so easy to use. Omron DOBF 508 reliable, has an opportunity programs for four users and a program "guest". There are many models of impedance meters, but no need to put more if you just want to follow some parameters of your body changing. After entering your bearings in memory, you will deliver your weight, of course, but also your fat mass index, among others. It is necessary to follow the recommendations for use, since the calculation system takes into account the amount of water present in your body at the time of use. So if you drink a lot before or makes an effort that made you lose water, the measurement will be distorted.