Features: 8 There are 8 preset massage modes available to switch between tapping, tuna, acupuncture, acupressure, friction, vibration, pinching, foot massage and ear rubbing to reduce body pain such as sciatica, arthritis or disc/joint inflammation, rigid arms, low back pain, improve sleep quality, promote blood circulation and relieve pain. With 15 different variable intensities, you can choose the right one to relieve pain to meet your requirements. Easy to use and operate. With self-adhesive pads, you can stick them to any part of your body for a comfortable massage. USB charging, don't worry about sudden power off. You can use this device for more than 10 hours on a full charge. Support LCD backlight function, this device can provide better screen view, especially at night or in low light, safe and reliable. Designed as a dual channel, you can set it up simultaneously and stop it. Specification: Color: as shown Material: ABS Rated Power: 2 W Rated voltage: 4,5 V Recommended usage time: 5 10 15 minutes Power Supply: 3 AAA batteries Modes: 8 Intensity: 15 levels The package includes: 1 x Electric Muscle Stimulator 4 pairs x blocks 4 cables 3 batteries 1 x Self-Adhesive Board 1 x User Manual 1 x EU power supply 1 USB cable