The RD-545 delivers extremely precise medically accurate BIA measurements thanks to its dual-frequency technology, which are typically only found in professional medical devices. Additional 4 electrodes, 2 for each hand, are located on the extendable handle. The electrical resistance is measured a total of five times over different paths (from foot to foot, hand to hand, left hand to right foot, right hand to left foot, and left hand to left foot). This achieves 100% body coverage compared to about 75% with other models. This means higher accuracy, especially for athletes and individuals whose body composition deviates from the standard. With the measured resistances, the scale can then break down the segments. You will see the body fat percentage and muscle mass in kg separately for the right and left arms, the right and left legs, as well as the torso. Imbalances between right and left or arm to leg can be identified and tracked.