Electric octopus head massager. Release tension, massage scalp. •This massager is highly flexible and has 12 massage arms, making it the perfect product for massaging your head and relieving stress. •It has a USB charging port. When you press the power key the four red LED lights will turn on. •Easy to use and with two different speeds. Variable intensity mode. •Automatic shut-off 15 minutes after switching on. •Includes USB charging cable. Voltage: DC 3.7V Charging voltage: DC 5V/1A Battery: 650 mAh Charging time: 2-3 hours Usage time: up to 4 hours. ABS, metal alloy.