Intelligent Home Use Electric Intelligent Kneading Heating Knee Massager Rechargeable Pain Relief Infrared Laser Vibration Knee Massager

The low frequency seems fine for vibration.

Arrived quickly, everything is fine. It was well packed. It was in a general package. Weak but can be used for relaxation.

This package was well-received, and i'm delighted with its contents. Thanks to the seller.

Don't buy! The product comes with a defect! It doesn't work.

It really helps.