There are two handles, SR means Skin Rejuvenation handle: spot size 10 * 40mm, wavelength 560nm-950nm.  HR means Hair removal handle: spot size: 15 * 50mm, wavelength: 650nm-950nm.  Both handles use the lamps imported from Britain,total 1 million shorts. the mandles use the sapphire crystal, with high density, high transmittance and high conductivity, so that the light can be transmitted without impurities.  The handles use the automatic identification, automatic water lock .