A. This wireless digital microscope can be used for coin and stamp collection, skin examination, industrial inspection (PCB), observation of animals, plants and insects, learning and testing, biological research, identification of garden parasites, jewelry appraisal, printing inspection, circuit board repair, etc. It is a good gift for children, students, collectors, testers, and anyone interested in exploring the microscopic world. B. Focus wheel: It can achieve zooming and focusing from 50X to 1000X. C. Dust cover: It adopts a transparent design while ensuring sufficient light. D. Eight LED lights: The light can be adjusted according to different environments and can be used in relatively dark environments. E. Sensor: Photosensitive wafer with good performance. F. Sensor size: 1/6. G. Magnification: 50 - 1000 times. H. Lens structure: 2G + IR. I. Camera: 8 - level adjustable EDT. J. Operating temperature: 32 to 113 degrees Fahrenheit (0 - 45 degrees Celsius). K. Power input: DC 5V. L. Length: The specific value is not mentioned. M. Camera resolution: 640 * 480. N. Image format: JPEG. O. Color: Black. P. Material: Plastic. Q. Package contents: - One digital microscope. - One English instruction manual. Only the above package contents are included, and other items are not included. R. Precautions: Light and different displays may cause the color of the item to vary slightly from the actual object. The allowable measurement error is plus or minus 1 - 3 centimeters.