That's Dream Factory 's exercise goods' Doctor Air EMS Exapad EMS - 001' (EMS Exa pad).
"EMS Exapad" is an exercise goods that supports the expansion and contraction exercise of muscles at the place you pasted. A program combining electrical stimulation of 1 to 60 Hz, tightens various parts of the body. The shape is a 6-pole structure that fits the body and can be used not only for the abdominal muscles but also for the thighs and hips that are difficult to train. The size is about 185 (width) × 175 (depth) × 13 (height) mm, weighs about 57 g (body only).