40x to 1000x 40x to 1000x Magnification 2 in 1 USB USB and Micro USB Built in 8 LED Embeded in 8 SMD LEDs (dimmable) with brightness adjustment control to improve images quality Adjustable Stand Easily analyze the surface of objects large and small at any angle by positioning the flexible gooseneck precisely where you want it. More applications Beauty: skin and hair inspection. Education: show your boys and girls the beautiful micro world. Hobbies : inspection for butterfly specimen, stamp or coins Industry and other : For textile, PCB, Jewelry & microbiological inspection Note: Focus Wheel can be used on ALL devices. But SNAP and ZOOM button can only be recognize on window system as the software was wrote by our company, and android APP (mac system doesnt need software) is common in the market so it cant recognize the SNAP and ZOOM command. Remove Lens Cap when use Remember to take the lens cap off otherwise you will end up focusing on the plastic cap as shown below. It is fairly obvious if this is the problem as moving the microscope will only change the light levels not the image. Parameters: Focus Range: from 10mm to 250mm Frame Rate: Max 30f/s under 600 Lus Brightness Magnification Ratio: 40x to 1000x Video format: AVI Photo format: JPEG or BMP Light source: 8 LED Operation system: Windows 7 8 10/Vista/XP/2000, Mac OS X 10.5 or above, some of Android mobiles,