Lidl offers the Silvercrest Personal Care SPWD 180 I1 bathroom scale for less than 10 euros. The multifunctional scale calculates your BMI, your calorie needs, your muscle and bone mass, without forgetting the percentage of body fat and water, the all based on the impedance meter.
The scale has 4 stainless steel electrodes, which allow a slight electrical current to circulate in your body, to then calculate the different proportions of muscles, bones, water and fat. It has a 6 mm thick safety glass on the surface, resistant and easy to clean.