no consumable parts ,metal material ,very durable.treatment tip diameter is only 0.01mm, so which will not damage the epidermis. the high frequency creates high energy density, which could coagulate target tissue immediately, and these target tissues would be sloughed off within one week. 980nm laser is the optimum absorption spectrum of porphyrin vascular cells. vascular cells absorb the high-energy laser of 980nm wavelength, solidification occurs, and finally dissipated. overcome the traditional laser treatment of red, swollen and burnt skin, professionally designed handle we provide excellent after-sales service, at any time for you to solve the problems you encounter in the use of this product, to provide quality warranty services..syi