Electro Stimulator Black Massage Device E-stim Power Box with Plug Stim Blue Plastic Ring

How to use the host : 1. Install 2pcs AAA battery, adjust the the strenght to weakest . ( The roller on the up right, can control the strength, up is weak, down is strong ) 2. keep press " Power " button 3-5 seconds until the light is red 3. Choose the modes : Pulse / Numb / Absorb / Auto. 4. Role the roller down slowly, until adjust it to strength that suitable for you 5. "Adjust": it can control the shock frequency, it work a while and pause , then work, not keeping work.