Garmin Index S2 scale is crap . This scale is crap and way too expensive for how poor it is. She really disappointed me because she gives the wrong fat ratio. I just had a DXA and Bod Pod measurement, which is the most accurate there is, and I was measured with a 7% body fat percentage.
When I have the Garmin Index S2 Smart Scale measure me, the scale says I have a body fat percentage of 19%, which is twice the correct amount.
This scale cannot be said to be useful as it clearly does not work. Returned and received a new one, but it was not a fault in the scale. The scales are simply not able to measure correctly. I'm told this happens most if people have a very low body fat percentage but a relatively good muscle percentage. If it is the case that the scale cannot handle people of that body type, it should be stated in the instructions, or at least the scale should not be sold under the pretense that it is fairly accurate in estimating body mass ratios when it is not at all. I don't know if it can estimate fat mass in people with a lot of fat, and if it does, the scale should be sold under the sign that it can't accurately estimate fat mass in thin people.