Electric Reusable Messager Sticker Kit Body Therapy Intelligent Multifunctional Pulse Mini Portable Patch Item Type: Multifunctional Messager Sticker Kit Material: Silica Gel + HydrogelApplicable Parts: Arms, cervical spine, shoulders, waist, legs Power Supply Mode: One CR2032 button (Not included) Features:  1. Relieve Fatigue: Reduce lactic acid accumulation after exercise 2. Relax Muscles: Guide muscle tissue to release vitality 3. Promote Blood Circulation: Enhance the vitality of surrounding cells 4. Relieve Pain: Relieve peripheral muscles and nerves Instructions:  "+" Button to increase massage strength, long press to turn on "-"  Button: Reduce massage strength, long press to turn off Installation Steps: 1.The package contains the massage body, gel sheet 2. Insert a one-yuan coin into the gap on the back of the fuselage, and open the back cover in the direction shown. 3. Put the battery(not included) into the body, cover the back cover, and close it in reverse.4. The conductive gel is protected by two transparent and blue protective interlayers respectively. Remove the protective film before use 5. Attach the conductive gel sheet of the blue protective film to the body according to the shape and press firmly. 6. Remove the transparent protective film and the installation is complete.