Waist/Lumber Massager | 1101000WSTMLow frequency pulse10 levels of pulse intensity can be adjusted, through low frequency pulse technology, It can penetrate 3 5 cm deep into the skin, open up pain points and meridians, Act on the waist to relieve pain. Swing left and right: dual airbags operate independently Multi angle continuous traction. Push and pull up and down: Using the principle of arc stretching, through the upper and lower dynamic stretching cycle Reduce lower back pressure