①. Equivalent focal length 40.6mm exit pupil diameter: 1.45mm ②. Optical Distortion: < 4.5% Focus Distance: 0.3MM ③. Number of lenses: 4 pieces 4 groups + CPL ④. Lens Aperture: F1.8 Lens Coating: Multilayer ⑤. Product material: PCs + electronic components ⑥. Clamping distance: Max: 12mm, Min: 4mm ⑦. Battery capacity: 110mAh ⑧. Light on time: 2-4 hours, flash when the power is used up ⑨. Charging instructions: red light when charging, green light when full ⑩. charging time: 1h ⑪. 200X Magnification Unveil the microscopic wonders with 200 times magnification, capturing every intricate detail in HD clarity ⑫. Versatile Applications Embrace the diverse world of possibilities with NanoZoom x200. Ideal for lab work, jewelry appraisal, art investigation, and outdoor exploration - the choice is yours ⑬. Portable & App-Free Effortlessly transform your smartphone into a powerful microscope - no need for any additional apps ⑭. Wide Compatibility Specifically designed universal clip caters to mobile phones, ensuring a seamless experience for all users ⑮. Perfect Gifts A useful, practical lens for students, collectors, engineers, testers, and anyone interested in exploring the microscopic world