The Omron AdvantageBioelectrical impedance is clinically proven. It works by sending a small, imperceptible electrical signal through the whole body–from arm to arm or foot to foot–to calculate total body water.Given the ratios of the water in your upper and lower body change throughout the day – as gravity pulls more water into your lower extremities – the electrical impedance of the body also varies.Typically, these types of measurements could only be taken by a doctor or physical trainer. With Omron, you can get them at home, anytime you want.Body Fat PercentageIf you’re losing weight, tracking your body fat percentage lets you know you’re trimming the fat as opposed to losing other kinds of weight.Body Mass Index (BMI)This indicator is calculated from your height and weight and is a measure of overall body fat. The higher the BMI, the greater the chance for possible health risks.Get a Grip On Your HealthMeasure your body fat percentage and BMI with one easy-to-use and easy-to-read handheld device.Measures 2 fitness indicators: body fat percentage and body mass index (BMI)Choose from standard or athlete modeMeasures up to 9 profiles with guest modeLarge LCD display gives readings in either US or Metric