Somehow it does not operate. Now I have no big belly (white beer spoilers), but somehow my abs have not contracted. Even at the highest level I've actually noticed anything, just a little has tingled ... The waist belt has been correctly fitted according to instructions. The electrode was slightly moistened and were also in place. Gekribbelt little has it, was pretty unpleasant.
In my opinion, totally pointless. Belt has also stunk very Chemicals. Would not put me voluntarily to the hips.