•The electric neck massager features a U-shaped design so it fits perfectly to the skin of the neck. Relieves and relaxes neck muscle pain, stiffness and fatigue, improves sleep quality and promotes blood circulation. •Kneading massage for both sides (left and right) so you can choose the one you prefer in each situation. Revitalize muscle vitality, relieve pain, stiffness, fatigue, and sleep better thanks to our massage pillow. •It features a head and neck massager design that relaxes neck muscles and relieves cervical fatigue. It also has an excellent heat retention effect thanks to its infrared lighting and can be used as a massage therapy to help you get rid of aches and pains. •This massager is designed to be easy to operate and suitable for everyone to use, with two built-in modes that can be adjusted via operation buttons to suit different needs. The best option for your loved ones. Perfect for home, office, car and travel, use it at home or on the go. Power: 3.7V Charging voltage: DC5.0V Battery capacity: 2000mAh Executive standard: GB4706.1-2005, GB4706.10-2008 Safety standard: GB18401-2010 Class B Hand washable. br />Do Not Bleach. br />Do Not Iron. The inner core cannot be washed. Polyester, spandex, memory foam.