1. Full multi-coating optics, HD pictures in details. 2. Light and easy to use no need APP. 3. wide compatibility: F1.8 design and universal clip for 98% mobile phone. 4. Use it for lab work, STEM applications, jewelry appraisal, health diagnosis, art investigation, outdoor exploration etc 5. Compatible with Single and Dual-camera Phones. Optical distortion:Less than 4.5% Standard definition of focusing distance:10-11.4mm (The best distance is 10.95 from the first glass of the lens) Focus distance product shape definition:3.6-5mm (the best distance is 4.57 from the outer surface of the product) Number of lenses:4 in 4 groups Magnification:about 100x Lens :F1.8 Lens coating:Multilayer Clamping distance:about 40mm from the edge of the phone Battery capacity:30mah Charging port:-usb LED brightness:6 LED light guides, one brightness Light :about 100 minutes, flashes when the battery runs out Color temperature of lamp beads:6000~6500k Charging indicator:Red light is on when charging, green light is on when fully Charging time:about 90 minutes Colour:Black Material:PC Size:8.6cmx8.6cmx3.0cm Package Contents: 1* Phone lens 1* USB cable 1* Cleaning cloth Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.