Smart Electric Neck and Shoulder Massager Pain Relief MachineThis neck and shoulder massager uses the pulse technique, penetrates 3 to 5cm below the skin and thus reduces pain in the cervical spine, has a constant temperature of 42 C to relax the muscles and improve blood circulation by dilating blood vessels. It has 3 massage modes: Acupuncture, Massage and Tapping mode, and 15 levels of intensity adjustment. You can take it everywhere since it is rechargeable and if you use it for 15 to 20 minutes a day it