Don't waste your time nor money on this device. On one day I am 15.5% body fat, on the next one I am 21.6%, then 18%, etc. I am following their instruction to the letter. No measurements are accurate or even close to be consistent. Don't even get me started on the muscle quality. Check their Facebook page first, you will definitely get a sense of how many people have the same problem! Getting a refund.
PS: I got a Skulpt Chisel, their newest product.
Bottom Line: No, I would not recommend this to a friend