Name Neck Massager Battery 3.7V 2000mAh Temperature 5--40 Power 6W NW 900g Function 1. USB charge, Your portable massage master 2. Patent design, 180-degree free opening 3. U-shaped elastic design Nicer fit for better massage 4. Cordless with smart outstanding 5. Infrared light hot compress 6. One machine for the whole body massage 7. Ultra-thin battery with big power, per charge can working 2 hours 9. 3.7V 2000mAh Li -battery.
