Kit includes, microscope stand with base, trinocular head, achromatic objective lenses: 4x, 10x, 40xs, and 100xs (oil), eyepieces: WF10x and WFh20x, filters, bottle of immersion oil, 5mpx digital camera, camera adapter, USB cable, installation CD with sof. Head: trinocular rotatable 360° inclined 45°. Magnification: 40–2000x. Eyepiece tube diameter: 23.2 Mm. Eyepieces: WF10x/18mm, WFh20x. Revolving nosepiece: 4 objectives. Condenser: Abbe n.A. 1.25. Diaphragm: Iris. Focus: Coaxial, coarse and fine (coarse: 22mm; fine: 0.002Mm). Illumination: Led. Brightness adjustment: yes. Power supply: 110 v/50 hz. Light source type: Led 0.5W. Filters: yes. Additional: eyepiece tube length: 160mm. Megapixels: 5.1. Sensor: 1/2.5'' Cmos. Pixel size: 2.2X2.2 µM. Sensitivity, v/lux.Sec@550 nm: 0.53. Video recording: yes. Usage location: eyepiece tube (replaces the eyepiece). Image format: *.Bmp, *.Jpg, *.Jpeg, *.Png, *.Tif, *.Tiff, *.Gif, *.Psd, *.Ico, *.Emf, *.Wmf, etc.. Spectral range, nm: 380–650. Method of exposure: ers (electronic rolling shutter). White balance: auto/manual. Exposure control: auto/manual. Software: USB 2.0 Driver, software. Programmable options: Image size, brightness, exposure control. Camera slot: USB 2.0, 480 Mb/s. Processor up to 2.8Ghz intel core 2 or higher, USB 2.0 Port, Compatible with mac os and linux. Camera power supply: via USB cable. Video format: *.Wmv, *.H264, *.Avi, etc.. Maximum resolution: 2592 ? 1944. Rotating trinocular head. Achromatic lenses. Abbe condenser. Iris diaphragm. Two-axes stage. Fine and coarse focusing. LED illumination with adjustable brightness. Household current power supply. Lifetime warranty. Made from optical glass and metal. Gray and black finish. Assembly required. 19.3 in. L x 15.7 in. W x 10.6 in. H (13.2 lbs.). User Manual . d740t microscope is designed for viewing transparent microscope samples. The illumination system is located below the stage and has convenient brightness control. The light source is bright led (3 watts). Its brightness is continuously adjustable over a wide range. Illumination is powered by household current (power cord is included). The light from the source is redirected to the abbe condenser equipped with iris diaphragm. By adjusting the aperture opening, you can precisely focus the light beam at the desired area. Coarse and fine sharpness adjustment is done with a focusing knob.