Pulse Neck Massagers Heating Pain Relief Deep Tissue Trigger Point Massagers Shoulder Cervical Relax 6 Heads Neck Massagers Specification Item Type:Smart Neck Massagers Color:White Material:ABS Power:3W Voltage:5V Massagers Head:6 Pcs Time:15mins Weight:175g Size:12*15cm/4.72*5.91in Product Include 1*Main Machine 1*Electrode Wire 1*Pair Patch 1*USB Charging Cable 1*Manual 1*Box Feature 1.An electrical pulse signal is transmitted through the skin and acts directly on the sensory nerve cells to remove blood and pain. 2.4 mode and 15 gear will meet your individual needs. 3.6-zone Massagers,accurately covering the 4-7th cervical vertebrae periphery Massagers,covering the common painful areas of the cervical spine 4.Massagers adopted in the shape of the letter U, is compatible with streamlining and ring type design with a human cervical neck. 5.3D smart fitting technology. You can easily position the electrode according to the neck curve. 6.With electrodes patch,its not just the cervical spine that relaxes including shoulders,waist,back.