We noticed that when we applied increasing pressure, the motor surged a bit. The Mebak 3 has a main on/off switch at the base of its handle, which is rubberized and has widely spaced vertical ribs. You adjust the speed via the touchscreen display, which requires a lighter touch than physical buttons. A pressure sensor… Continue reading Sharper Image Powerboost Deep Tissue Percussion Massage Gun, 5 Interchangeable Attachments, Black