OMAX 20x-40x-80x Binocular Stereo Microscope with Dual Lights and 5MP Camera and Cleaning Pack Head: 45 degrees inclined binocular; Eyepieces: wide field WF10X/20, WF20X; Objectives: rotational 2x and 4x; Left ocular-tube diopter adjustment +/-5dp; Interpupillary distance: 2-3/16inch ~ 2-15/16inch(55-75mm); Working distance: 2-1/4inch (57mm) Incident (upper) illuminator: 12V/10W tungsten; Transmitted (lower) illuminator: 12V/10W tungsten; Easy illumination mode switch: [upper] [off] [lower]; Adjustable focus knob tension; Frosted glass stage plate: 3-3/4inch (95mm) in diameter White/black plastic stage plate: 3-3/4inch (95mm) in diameter; Head vertical moving range (along the pillar): 2-3/4inch (70mm); Focusing adjustment range: 1-5/8inch (42mm); Power supply: 110V/60Hz (US and Canada); Cleaning Pack: - 100 4inchx6inch cotton lens cleaning sheets - Brush length: 5-1/2inch (13.5cm) - 100ml of cleaning solution - Cleaning cloth size: 5-7/8inch x 6-3/4inch (15 x 17cm) Digital camera: - true color 2592x1944 pixels (5M pixels) - 0.5X reduction lens to get larger field of view - 0.01 mm calibration slide: 1mm/100 division - Frame speed: 5fps at 2592x1944, 18fps at 1280x960, 60fps at 640x480 - Software compatible with Windows XP/Vista/7/8/10, Mac OS and Linux operating system - Capturing microscope images, recording live video, measuring lengths, angles, areas, editing images - USB cable included 5-year warranty against manufacturing defects