6 Modes Cervical Neck Traction Device Back Posture Vibrating Massager Tools Electric Body Massagers Stretch Care Massage Pulse – Neck Massage Machine – Neck Rechargeable MassagerFeatures of Product:According to the design of human engineering, this aesthetic and scientific product is in accordance with the neck curve.Adopting the newest 3D smart fit technology, you can easily adjust electrodes according to your neck curve,If using the external connection, you will feel more comfortable.There are 6 modes, 9 gears, and 4 heads cervical spine massager. You can choose any mode in accordance with your requirements. It has a wider suitable range of the crowd.Type： Rechargeable