Head band LED loupe Model 2A Build in type(upgraded design for wire connection)

Model Head band loupe 2A Magnification: 3.5x Working distance: 380~420 mm (in one loupe) Field of vision: 100 mm Depth of Field: 90 mm     Magnification: 2.5x Working distance: 380~420 mm (in one loupe) Field of vision: 110 mm Depth of Field: 85 mm Battery Build in type(upgraded design