[2.4 MHz HIFU ultrasound function] the ultrasonic focus point acts on the SMAS layer of the human body to reorganise the collagen in the SMAS tissue without damaging the normal tissue, restore the elasticity of the skin, thin fine lines and improve facial contours.[radio frequency function] the radio frequency can emit 1 million microwaves per second, which deeply heat the skin, promote the breakdown of subcutaneous fat and quickly open the pores to facilitate skin cleansing.[100Hz EMS microelectric function]massage the facial skin in different modes to improve skin tightening and firming.[200 kHz pulse function] Micro heat opens the pores and promotes tension circulation in the depth of the skin, making collagen more active and improving the elasticity of the skin.[With the 4 in 1 function]you can save money by not having to buy different instruments with different functions, this one machine can solve all your skin problems and can be given as a gift to your friends and family