Model: W43A2-D3X2-E30-L12Y; Total magnification: 2X-270X; Zoom ratio: 135:1; Head: 45 degrees inclined 360 degrees rotatable trinocular; Eyepieces: high eyepoint widefield WF10X/20, and widefield WF30X/9; Two ocular tubes have diopter adjustment +/-; Objective zoom: 0.7X-4.5X; Auxiliary objective lenses: 0.3X and 2.0X; Adjustable interpupillary distance: 1-3/4inch ~ 2-3/4inch(47~73mm) * Microscope body can be angled 0-90degrees;; Body holder dimension: 76mm; A lever to swap the view between the photo tube and the left ocular tube; Working distance and field of view: see the table of working distance and field of view of add-on auxiliary objective lenses * Focusing vertical travel: +/-1inch; Boom stand: - 15-1/2inch (395mm) double-arm - 28inch (710mm) overall length - 14-1/2inch (370mm) high pillar - 1-1/4inch (32mm) boom bar dimension - 10-1/4inch x 8-1/4inch x 2inch (260mm x 210mm x 50mm) solid cast steel base; Illumination: - 21V 150W halogen lamp - 20inch (50cm) dual (Y type) gooseneck fiber pipes - Fan cooling system for lighting power unit - Power input: AC 115V or 230V switchable * Digital camera: - true color 3488 x 2616 pixels (9.0MP) - 0.45X reduction lens to get larger field of view - Software compatible with Windows 2000/XP/Vista/Windows 7 32/64-bit - Capturing microscope images, recording live video, measuring lengths, angles, areas, editing images - USB cable included * 5-year warranty against manufacturing defects