LCD Display EMS Neck Massage Electric Massager Cervical Neck Back Patch 8 Mode Pulse Muscle Stimulator Portable Relief Pain

Specification: \n \nProduct Name:Magic paste \nVoltage:3.7V \nHow to use:A-F (8 modes) 19 gears \nFrequency:1-100HZ \nWorking Hours: 15 minutes \nOutput: 35mA maximum \nBattery Capacity:200mAH \nFrequency: 1~100Hz \n \nFeatures: \n \n* 100%...