This product is Galileo head-mounted magnifier, with magnification of 2.5X and 3.5X working distance: 420mm. The composition image magnification system of objective lens and eyepiece has f view, long depth of field and high resolution. The interpupillary distance of this product can be adjusted synchronously in two directions, which is fast and convenient! The accurate observation position can be obtained through adjustment; The hood is tightened in one direction. Professional appearance design, fashion, high-end and atmosphere This product is suitable for otolaryngology, oral cavity, eye, general , micro- and other observation. It is also suitable for the identification and detection of industrial micro-body and jewelry.