Intelligent Wireless Neck Massager 6 Heads for Neck Massage Spine Relief Instrument Precise Massage & Deep RelaxationSpecification:Intelligent Neck Massager adopts with human body cervical physiological curvature of the popular type circular design. Using low-frequency pulse, hot compress and 3D intelligent bonding technology to form a composite energy field to achieve tetras health care. During the working process, by maintaining the correct physiological position to provide a healthy and cozy Therapy for cervical spine.Enjoy a more valuable, relaxed and happy multi-functional health Care system at anytime and anywhere.12 Levels of Intensity Adjustment:Level 1-4 Comfortable for daily use; Level 5-8 Moderate for neck stiffness, relieve fatigue; Level 9-12 Stimulus for chronic cervical strain.Constant Temperature Hot Compress:comfortable and warm to penetrate the texture smart compressTENS pulse Technology:Magnetic therapeutic effect of low frequency pulse in deep nursing1.5 Hours Charge & 1200mAh Lithium Batter; Working Duration Time: 15 minutes timer