Technical specifications Model B-292 Head Binocular, 360° rotating, 30° inclined. Eyepiece Wide Field 10x/20mm Nosepiece Quadruple, reversed Objectives DIN E-PLAN Achromatic 4x/0.10, 10x/0.25, 40x/0.65, 100x/1.25 Stage Double layer, 150x133 mm with X-Y 75x50mm moving range Focusing Coaxial coarse and fine focusing Illuminator X-LED3 system with adjustable intensity Condenser Sliding-in, 1.25 N.A. Abbe type with adjustable height and iris diaphragm Power supply 100-240 Vac 50-60 Hz external power adapter 6Vdc output.