Check the listing for details. 1000X Electronic magnifier Lab Research Biological USB digital microscope w/ LED. Listed at 21.95 USD. 1000X Electronic magnifier Lab Research Biological USB digital microscopeProduct DescriptionFeatures:This product is suitable for skin inspection, hair root inspection, textile inspection, biological observation, gem identification, and gazing device to assist people with visual impairment to read. Print inspectionIndustrial inspections, such as printed circuit boards, precision machinery, etc. do not need to exchange Lens can do 200 times to 1000 times changes through focal length adjustment!Eight built-in LEDs are very bright, even if the lens is close to the subjectEasy to operate with USB and PC connection, easy to take photos, live video timing, and measurement software.It is also a USB camera, so you can use the On-line method of various video software such as MSN Skype QQ to let the other party see the action environment: Windows 2000/XP, Vista, Windows 7, Mac OS.Interface: USB1.1 (2.0)Sensor:1/4 CMOSResolution: QVGA (1280X1024)Magnification: 40x ~ 1000xLight:8LED LightFrame rate:30fpsUse possible range: 3.2cm to 10cmExposure correction: AE/Automatic correctionWeight: 90g Packing list1 x Microscope1 x Metal stand1 x Software CD1 x Calibration Ruler