... relax fatigue. Besides, the muti bores instructure can absorb, decompose and purify function for some special material, such as benzene, hydroxybenzene, carbinol ... machine will turn on. After one session, it will turn back to mode 1 automatically, waiting to work again.1, ... into the jack at the back of machine; Press the button START/STOP (Acupuncture) to start the function, accorind to requirements, ...