Release adhesion, dissipate blood stasis, relieve spasm and pain, relax muscles and tendons. Knead the muscle relaxer, inherit the muscle relaxing technique with scientific empowerment, make the muscles do gymnastics with you with softness, become stiff, tight and soft in 30 minutes, and win a brand-new experience of 100%. It is designed with double handles, operated manually, and the front and back surfaces slide away, without irritation and tingling to the skin. The frequency is mostly 1000- 1500Hz, which belongs to intermediate frequency pulse and has obvious effect on deep muscles.