fittrack dara smart bmi digital scale - measure weight and body fat - most accurate bluetooth glass bathroom scale (white) fittrack know your body. fittrack dara measures more than just your weight in grams and pounds, from the comfort of your own bathroom.<br><br> fittrack uses advanced bioelectric impedance analysis (bia) technology. when you stand on a fittrack monitor, a very low, safe electrical signal is sent from four metal electrodes through your feet to your legs and abdomen.<br><br> the electrical signal passes quickly through water that is present in hydrated muscle tissue but meets resistance when it hits fat tissue. this resistance, known as impedance, is measured and input into scientifically validated fittrack equations to calculate body composition measurements. body composition measurements are provided in under 20 seconds.<br><br> fittrack advanced dual bia technology uses two different frequencies to capture your body composition data. by using different frequencies, even higher accuracy of measurements can be achieved.<br><br> fittrack’s dual bia technology is designed to measure the following:<br> weight<br> body mass index (bmi)<br> body fat ratio (bfr)<br> muscle ratio<br> body water percentage %<br> bone mass<br> base metabolic rate (bmr)<br> protein rate<br> metabolic age<br> visceral fat index<br> subcutaneous fat<br> standard weight<br> weight control<br> fat mass<br> weight without fat<br> muscle mass<br> protein mass<br> obesity level<br> <br> medical advisory: people with an electronic medical implant, such as a pacemaker, should not use a body composition monitor. the electrical signal traveling through the body may interfere with its operation. pregnant women should use weight function only, all other functions are not intended for pregnant women.