Features: Adopts optical glass, premium lens grinding process, good physical and chemical properties, making for image clearer. Multi-layer coating film, water-proof, oil-proof, anti-fouling and scratch-resistant performance. Super wide-angle lens can increase the horizontal shooting range by 25% without affecting the video and photo quality while maintaining the vertical viewing angles. Snap-on design can be quickly disassembled and assembled with a twist and a pull, and the installation is firm, you can change the lens at any for time without missing any wonderful moments. Lightweight design, the frame is made of high quality material, light weight but strong, corrosion resistant and longer lifespan. Specifications: Material: ABS+Optical Glass Size: Approx. 23.4x18.2x10 mm/9.21x7.16x0.39 inch Applicable Model: for Mini 3 Pro Angle: 110 Degrees (18mm) Interface: Snap-on Distortion: -10% Magnification: 0.6X Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece External Wide Angle Lens