Features:1. This wireless neck massager is a way to achieve deep relaxation of the cervical spine.2. The fashion and compact design allows you to enjoy the massage experience anywhere.3. This really a best Christmas gift for your family and friends. Especially for those who are suffering from the sedentary work/study, it will give the enough relaxation for muscle tension and cervical fatigue.4. Neck massager uses low-frequency electronic pulse transmitted to deep skin,and use electronic pulse simulation variety of massage methods to achieve deep relaxation of cervical spine, relieve your neck pain.5. Electric frequency pulse signal skin conductance, direct effects onDredge blood analgesic sensory nerve cells.Notice:*Actual color may be slightly different from the image due to different monitor and light effect*Please allow 1-3cm deviation due to manual measurementType A: Battery poweredType B: USB Charging poweredSize: 22cm*20cm*6cmBattery: 2 x AAA Battery (not included)includes:1 set x Electric Pulse Neck Massager