The Optika B-157 Binocular microscope is an advanced instrument capable of up to 600x magnification. It features a binocular head intended for easy viewing for long term heavy use where comfort is a consideration. The removable WF10X/18mm eyepiece which is secured by a small screw can be removed to accommodate an eyepiece micrometer or eyepiece camera when necessary. Coaxial coarse and fine focusing mechanism. Illumination is by a 1W X-LED with light intensity control.Accessories included:Power supplyDust coverInstruction manualAccessories available separately:Spare Power lead (B8R06948)Eyepiece WiFi Cameras (PP00050387 - USB PP00050388 - Wireless)Eyepiece Micrometer M004 (B8R06422)Stage Micrometer (B8A76119)Alcohol-free Antiseptic Wipes - for cleaning eyepieces between use (B8R08715)Lens Cleaning Tissue (PP00052867)Microscope Maintenance Kit (B8R07243)Technical Specifications:Total magnification: 40x 100x 400x 600xEyepieces: Wide field WF10x/18mm secured with a screwHead: Binocular 360° rotating with 30° inclined eyepiece tube. Diopter adjustment on left eyepiece Interpupillary adjustment 48-75mmNosepiece: Quadruple revolving nosepiece rotation on ball bearingsObjectives: Anti-fungal treated High Contrast Achromatic (HC) objectives with mechanical tube length 160mm4x/0.10 W.D. 18mm10x/0.25 W.D. 7mm40x/0.65 W.D. 0.53mm60x/0.85 W.D. 0.45mmStage: Double layer with mechanical sliding stage with specimen holder 125 x 116mm. X-Y movement range 70 x 30mm. Vernier scale on the two axes accuracy 0.1mmFocusing: Coaxial coarse and fine focusing mechanism (graduated 0.002mm) with upper stop. Adjustable tension of coarse focussing knobCondenser: Abbe condenser N.A.1.25 pre-centred focusable by rotationIllumination: 1W X-LED with adjustable intensityLED Details: 1W 6300K colour temperature average life time approx. 50000hObservation Mode: BrightfieldVoltage: External power supply 100/240V 50/60Hz output 5V D.C. 500mADimensions: (H)350mm x (W)170mm x (D)320mmWeight: 4kgAge Suitability: 16-18 Years