This scale can only provide an "estimate" of your body fat percentage, an estimate that is far from accurate.

Here's how it works. It sends pulses of electricity through your feet and legs... only. Basically, the upper part of your body is ignored because the pulses don't travel through that area. Using the measurements taken from your legs, the scale guesses your total body fat. The problem being that people store different amounts of fat in different places according to their genetics. So if you tend to store more fat in your legs, this machine will rate your bf% much higher and if you store more fat in your upper body, it will rate your bf% much lower.

I would recommed a scale that has both the feet and hand plates for measurement. Those scales are much more accurate for your total body bf%. The same company that makes this scale makes one, but it is, of course, a little more expensive.

Teh scale is repeatable an seems very accurate. It stores personalized weight data. However, the "fat content" reading is "hit & miss". Feet must be clean and dry before attempting use.

I did a little test to see if this thing was for real. It is not.

Set the system for my weight and height and it said my body fat content was 25%. I then used the same settings and held 40 pounds of steel weights. The scale said my fat content was 36%. The weights had no fat in them. the scale assumed that 93% of the additional weight was fat

I then said my height was 9 inches taller than I actually am. It said my body fat content was 12%. My actual fat content did not change. I told the computer I was 5 inches shorter than I actually am and it said my fat content was 31%

Obviously the scale is only using a simple algorithm to determine optimum weight for each height and then assumes any additional weight is fat. This is erroneous. A football linebacker has a different body build than a marathoner but this scale would tell them they had different fat content even if they were the same.

A bogus gimmick. Do not trust.

I use this every day and it is a solid scale. I like the functionality of setting if for 2 people.

The idea of being able to determine the body fat percentage and wieght is great...too bad none is accurate.