Features: Plug and see, no special knowledge needed High quality optical glass elements Long working distance: 80mm Magnification level: 30x 45°inclined binocular head Dual lights: incident and transmitted lights Sharp stereo erect images over a wide field view Diopter adjustment on left ocular-tube Adjustable inter-pupillary distance Locked-in eyepieces Adjustable focus knob tension Metal stand and framework Product GS and CE approved Manufacturer in business 30+ years Specifications: Model: G222 Head: 45°Inclined binocular. Eyepieces: wide field WF15x Dovetail inserted style objective: 2x Field of view: 7.5 mm Left ocular-tube diopter adjustment ±5dp Interpupillary distance: 2-3/16" ~ 2-15/16"(55-75mm) Working distance: 2-3/4" (70 mm) Incident (upper) illuminator: 12V/10W tungsten Transmitted (lower) illuminator: 12V/10W tungsten Easy illumination mode switch: [upper] [off] [lower] Adjustable focus knob tension Frosted glass stage plate: 3-3/4" (95mm) in diameter White/black plastic stage plate: 3-3/4" (95mm) in diameter Head vertical moving range (along the pillar): 2-3/4" (70mm) Power supply: 110V/60Hz (US and Canada) Dimension: 7-1/2"x 4-3/4" x 12-1/2" (19cm x 12cm x 32cm) Net weight: 5lb 11 oz (2.58kg) Packing List: Binocular stereo microscope with a pair of WF15X eyepieces Frosted glass objective stage plate Black/white plastic stage plate Rubber eyeshields Wrench for focus knob tension adjustment Allen key for stage lock Dust cover Extra tungsten bulb (12V/10W)