OMAX 9.0MP USB Digital Camera for Microscope with 0.01mm Calibration Slide (Windows/Mac/Linux) Image sensor: Aptina 1/2.4inch color CMOS; Resolution: 3488x2616 pixels (9.0M pixels); Pixel size: 1.67um x 1.67 um; SNR: 34dB; Dynamic Range 65.2dB Frame rate: 1.9fps at 3488x2616, 8fps at 1744x1308, 27fps at 872x654 Interface: USB 2.0 only; Reduction lens: 0.5X, fit to 23.2mm eyepiece tube; 0.01 mm calibration slide: 1mm/100 division; Adapters fit 30mm and 30.5mm eyepiece tubes Compatible with Windows XP, Windows Vista, Windows 7, Windows 8, Mac OSX, Linux 1-year warranty against manufacturing defects