Features: Optical glass, precised grinding and polishing. Adopting double-sided multilayer coating technology. Double sided oil proof and waterproof, providing protections for your lens. The buckle design can be tightly fixed to the lens and will not accidentally fall during flight. Aircraft aluminum frame material, not easy fading. During installation, original lens will not be damaged, and filters can be changed at any time to prevent you from missing out on exciting moment. Specifications: Material: Aluminum alloy (frame)+optical glass Type: refer to picture to selection please Size: about 2.3x2.5x0.2cm/0.9x0.98x0.07inch Applicable Model: for Avata 2 Package Includes: 1Pc Lens Filter note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store