Specifications: Name: Electric Massager Color: Gray Power Supply: 3*AAA Batteries (Not Included) / USB Cable / Transformer Connector Item Size: 268*218*195mm / 10.55*8.58*7.68in Weight: 800g Package List: 1* Electric Massager 1 * USB Cable 1 * Guideline Features: Humanized design with excellent effects brings you a beautiful experience. Use two kinds of external power supply: computer USB interface connecto, transformer connection. Can also be powered by 3 AAA batteries (excluded). 8 kinds of massage intensity can be adjusted. Front side with elastic paneling, solid cardboard, depending on the head size, for a targeted massage. Back-end with slow release design, easy to remove, massage, acupuncture points, with soft latex. It is directly adjusted in the head massage acupressure points to the number before the two ends of the elastic adjustment in the back of the head, that is, toward a front hood, no hood in the head, then move the suitcase adjust massage intensity (1-8 type of intensity can be adjusted) . Turn off the power as needed at any time after use to be able to take off the head massager. Stimulate scalp deep tissue massage, relieve stress and increase blood circulation. Suitable for athletes, tired people, seniors, office workers, drivers or anyone in pain. Perfect for relieving brainfag, relaxing neck muscle, relieving pressure and improving memory brought on by long-term mental work. Note: For people over 12 years old.