This is the Power Button and Mode Switch.

The MagicPro comes with 6 different massage modes for customized relief:

Acupuncture Mode, Scraping Mode, Knead Mode, Thump Mode, Automatic Mode, and Twin On Mode

The Plus (+) Button increases intensity. The MagicPro offers 16 high-intensity levels for customized relief. To turn off the heat, press and hold the Plus (+) Button until you hear “Hot Compress Turned Off.” Repeat to turn it back on and hear “Hot Compress Turned On.”

The Minus (–) Button lowers the intensity. The MagicPro lets you adjust through 16 levels for your perfect comfort.