4 working modes: Vibration + LED Heating +LED Heating vibration Heating +vibration+LED General Feature General Feature 4 working modes: Vibration + LED Heating +LED Heating vibration Heating +vibration+LED General Feature 1. 4 working modes. 2. Safe, non-invasive, no pain, no side effect. 3. Built-in S00mAh rechargeable battery. 4.5V Micro USB charger. 5. Powerlcharging LED indicator. 6. Low voltage indicator. 7.5 mins automatic shutdown. Cerificate: CE