Theory:Stereo Microscope Drawtube:Trinocular Product name:7X-45X Big Base Optical Stereo Zoom Microscope for Pcb Inspection Magnification Ratio:7X~45X Drawtube:Trinocular Type:Trinocular Stereo Microscope Objective lens:Standard configuration 0.7x-4.5x Suit For:PCB observation, electric solding, carve and so o Application:Meet the repair such as high-precision requirements. Features:High Definition,Digital,Portable,Handheld Auxiliary objective:Optiona Warranty:1 Year Show More