Features: 1.Freely adjust the massage intensity: through the setting mode, there are 6 levels of massage intensity and massage intensity, which can be adjusted according to your own comfort 2.Micro-electric pulse massage: Relieve muscle discomfort through bionic micro-current pulse simulating massage technique. Continuously and gently stimulate nerves, muscles and cells, activate muscle vitality, and achieve a soothing effect 3.Relax your cervical spine while playing games, don’t worry about cervical spine discomfort when you bow your head for a long time. 4.Lightweight and compact, you only need to stick it on the cervical spine and start the massage when you use it, without affecting your work and daily life 5.Mini and portable: the main body is only 5.7CM in diameter and 1.8CM in thickness. Compact design and can be carried around. Traveling, traveling, and homestay make massage easier  6.Battery: 2x AAA Battery(not included)   Notice: Please allow 1-3cm deviation due to manual