The Beurer BF180 scale has the memory capacity to store up to 10 profiles so the whole family can have one.measures your body weight, body fat, body water, muscle percentage, bone mass, and Basic Metabolic RateThe brushed stainless steel plates aren't just about style, these are electrodes which when in contact with your feet, will send a small and harmless electrical current through your body to conduct a bioelectrical impedance analysis.This analysis works by measuring resistance as the electrical current travels through the body; flowing easier through water, blood, and muscle and slowing through fat and bone