Good thing that the seller was willing to refund me ...
Bought it last month and after the third use, the vibration of EMS just decreased significantly. I put the power mode to 10 (which is the highest on the scale), still couldn't feel much. I honestly think it was a defective unit. Good thing that the seller was willing to refund me the full price. With only 3 uses, I really can't say much about this product.
Rating: 1 stars