Equivalent focal length 40.6mm exit pupil diameter: 1.45mmOptical Distortion: < 4.5% Focus Distance: 0.3MMNumber of lenses: 4 pieces 4 groups + CPLLens Aperture: F1.8 Lens Coating: MultilayerProduct material: PCs + electronic components Clamping distance: Max: 12mm, Min: 4mmBattery capacity: 110mAh Light on time: 2-4 hours, flash when the power is used upCharging instructions: red light when charging, green light when fullcharging time: 1h200X Magnification Unveil the microscopic wonders with 200 times magnification, capturing every intricate detail in brilliant HD clarityVersatile Applications Embrace the diverse world of possibilities with NanoZoom x200. Ideal for lab work, jewelry appraisal, art investigation, and outdoor exploration - the choice is yoursPortable & App-Free Effortlessly transform your smartphone into a powerful microscope - no need for any additional appsWide Compatibility Specifically designed universal clip caters to mobile phones, ensuring a seamless experience for all usersPerfect Gifts A useful,Practical lens for students, collectors, engineers, testers, and anyone interested in exploring the microscopic world.