Main Features
Note: Vibration is invisible to the naked eye, only by putting it on your neck can you feel it at work.
1.Please settle 2 pcs AAA batteries
2. Switch on button .
3. Press ""on "" button . You will check the indicator display ""red'
4. Bring a neck massager around your neck
5. Press the button ""High"" until you feel an electric shock.
Specification