Viewing Head Specification * Binocular Viewing Head * Eyepiece: WF10X * Objective: Zoom 1X-4X * Sharp stereo erect image over a vide field view * 45癷nclined and 360皉otational binocular head with locked-in eywpiece with diopter adjustment +/- 5dp, interpupillary distance is between 55-75mm * Power Supply: 110V/60Hz or 220V/50Hz Other Attachment * Universal Stand with Large Base * 24V/150W cold light Source * Dual Optical Fiber Light Guide * With 550mm length, 5.6 Dimension of its head Optional * Eyepiece: WF20X * Auxiliary objective: 0.5X, 0.75X, 1.5X, 2X