Neck Protector Cervical Spine 2 Heads 3 Modes 15 Kinds Of Adjustment Remote Control Kneading And Heating SIZE：14.2x13.8cm/5.6x5.4in Describe: Heat therapy mode: It is as comfortable as a warm towel at a constant temperature and can soothe the area. The pulse frequency is transmitted to tissues to promote circulation and relieve your cervical spine pain. 3 massage modes: Replicate the traditional acupuncture and tissue acupressure therapy. By approaching the depth of the trigger point, the stiff connective tissue is relaxed almost immediately. Remote control: This seamless, lightweight and comfortable design allows you to wear the smart neck anywhere. Use for 15 minutes a day to relieve head and neck problems that lasted all day Use a combination of low-frequency electrical pulses, continuous heating, and TENS (Transcutaneous Electrical Nerve Stimulation) technology to achieve immediate relief and maximum comfort The is rechargeable which means you can use it anywhere around your home and office. Discrete and silent during use. 3 massage modes and 15 intensities Battery: 1600 mAh, fully charged for 2 hours via USB Autonomy: 8 hours (15 minutes each time) Include： 1 x 1 x remote control