YC-2003E Features: 1) Magnetic massager heads are changeable, chosen at will 2) Several changeable massager heads, it is convenient to point to press. Palm pressing massage 3) Please keep vibrating switch in "Off" position, then insert the plug into socket 4) Press the switch, the massaging starts with medium strength, and the infrared light is on 5) Press the decelerate button, the massage strength becomes weak 6) Press the accelerate button, the massage strength becomes strong 7) Press the automatic button, the massaging shift intermittent vibrating time with prevailing strength