The Optika B-60 Series is designed for novice users and are a particularly useful tool for introductory microscopy at primary level and beyond. The cordless modern binocular microscope is ideal for students and mainly primary schools with achromatic lenses (400x) FN18 eyepieces finite optical system coaxial focusing StagErase™ eraseable mechanical stage Abbe condenser and 1 W LED illumination with rechargeable batteries. The microscopes are slim and easy to carry it is equipped with arm/wrist rest support to reduce the fatigue during use and the long lasting LED illumination provides years of use. Benefits:Designed for novice users (students and primary schools especially)18 mm field number for an extended observation areaStagErase™ eraseable mechanical stage to reduce scratchesArm/wrist rest support to reduce the fatigue during useCompact practical and intuitive to useEasy to handle also by the youngest usersSturdy and durable for extended lifetimeLonglife LED illumination (providing many years of use)Cordless use totally independent from the mains connectionLow voltage external power supply for enhanced safety and convenient servicingTechnical Features:Head: Binocular 30° inclined; 360° rotating.Dioptric adjustment: Left eyepiece.Eyepieces: WF10x/18 mm secured by screw.Nosepiece: Quadruple ball bearings revolving nosepiece reversed.Objectives: Achromatic 4x/0.10 - Achromatic 10x/0.25 - Achromatic 40x/0.65. All with anti-fungus treatment.Specimen stage: StagErase™ eraseable mechanical stage 125x125 mm 62x24 mm X-Y movement range. Vernier scale on the two axes accuracy: 0.1 mm.Focusing: Coaxial coarse and fine focusing mechanism with limit stop to prevent the contact between objective and specimen.Condenser: Abbe N.A. 1.25 pre-centered focusable with iris diaphragm.Illumination: 1 W LED with brightness control rechargeable batteries. Color temperature: 6 300K.Multi-plug 100-240Vac/5Vdc external power supply.