http://www.nbysolen-tech.com/body-hair-device/ BodyHairDeviceSuppliers - Tight shoulders and neck pain from reading and work, - Muscle soreness accumulated after exercise, - Use the fascia gun to massage and massage to relieve tension and relax the body and mind. Features Three grades strength, please start from the lowest grade for the first use, and then adjust according to the body's ability to withstand. The compact body makes it easy to store. Product Information Product Dimension: 10.2 X 12.3 X 3.4 CM Material: ABS Charging voltage: 3.7V Working time: about 7 hours Contents: massage gun, 4 massage heads, TYPE-C USB cable, manu