SZ09010142 Trinocular Zoom Stereo Microscope Finite. System Optical Magnification: 8~50X. 10X Adjustable Eyepiece. 1X Built-in Objective. Standard Coupler: 0.4X. Zoom Ratio: 1:6.3. Eyetube Angle: 45°. LED Dual Illuminated Light . Top Illumination: Oblique Top Spot Light. Input Voltage: AC 100~240V 50/60Hz. Trinocular. Track Stand.