Review on Heating Massage Support Adjustable Arthritis by Mike Griffin

The product worked well, but I have questions about how the product works. Wrote a letter to the company two days ago, no reply. Heat settings are lower when using the USB adapter, not when using the AC adapter. In manual mode, the color codes are different than what I have on my device, causing some confusion about the high, medium, and low temperature settings. Otherwise, the device helps me to reduce knee pain.