I share my awful experience.
I know pretty well my body composition, attached the last measurement I've taken with the professional scale "in body" really accurate, I compared it with the clamp used by the nutritional doctor.
I have 11.8 % of body fat, 2% of visceral fat; the Garmin S2 gave more than 30%; I've bought it because I wanted more efficient Garmin connect datas, the result was the opposite.
Garmin should first retire the items from the market, second make the connect app more adjustable, as giving possibility to users of entering more datas as for hearth rate.
Garmin changed the item but the result was worse with the second than with the first, In the end I've gifted it to my neighbour saying that I was giving it away because my older scale works better and I do not need two.
