electric heating pad Rated voltage / frequency: 220V/50Hz Size: ... , waist , shoulder, joint pain fatigue and menstrual discomfort for women,frostbite, vervical disease and other effects are secondary.3 ... which increased the design of explosion-proof safety device Instructions for use: 1. Charge, set the heating pad flat ... goes out the need to unplug the power cord for use. 3. If it is found in the ...