PS818 Variable Speed Vibrating Mini Muscle Fascia Relax Massager, Specification: 12 Gear (Gray) 1. Shell material: ABS 2. Power mode: USB 3. Input voltage: 110V-240V 4. Rated voltage: 7.4V 5. Rated frequency: 50HZ 6. Rated power: 25W 7. Lithium battery: 1500mAh 8. Speed: 1200-3200 rpm 9. 1-3 levels of muscle relaxation, 4-6 levels of lactic acid decomposition, 7-9 levels of deep massage, 10-12 levels of professional massage 10. 10mm massage stroke, no hand-held vibration, relax the muscles of the whole body 11. Strong noise reduction motor, effectively reduce the friction noise of carbon brushes, high speed and low power consumption 12. Ball massage head: suitable for large muscle groups such as pectoralis major and latissimus dorsi 13. U-shaped massage head: suitable for shoulders, cervical spine and muscle groups on both sides of the spine 14. Conical massage head: suitable for impacting deep tissues such as joints, palms and soles, etc. 15. Wolf tooth massage head: suitable for relaxation and plasticity of various muscle parts 16. Weight: 450 grams 17. Product size: 15x14x5 cm