Instructions in English. 10 different modes for cramping and 30 levels of cramp power. Instructions put 15 minutes a day. Quite intensity is noticeable at level 5 in Mode 5 (fat burning) in the lower zone of the belly.

Very good abs muscle stimulator belt. Very wide range belt length. There are 10 styles of vibration and each style has an changeable tension.

Fast delivery. I found what I looked for.