Xiaomi Mi Body Composition Scale 2 Smart Fat Weight Health Scale provides accurate body composition statistics that gives you a realistic picture of your health and fitness. They produces accurate stats via a series of complex algorithms and advanced Bioelectrical Impedance Analysis (BIA). It automatically identifies each family member and can store up to 16 user profiles. The scale will operate up to 8 months using just 4 standard AAA batteries. To prevent slip and fall, the polished glass features anti-slip finish to ensure sturdy grip needed, even for wet feet. Beautifully hidden from view until you step on it for three seconds, the elegant display delivers clear readings using LED lights. By touching the electrodes of the scale with our feet, the current flows through our body and, based on the time it takes to do so, the scale algorithm estimates all the parameters related to muscle mass, fat and amount of water present in our body. This helps us keep total control of our body in real time with the support of the Mi Fit app.