Features: GND16 Len filter or ND filters set ND16 ND64 ND256, for Mini 3 Pro Drones camera accessory. Filters can elimanate reflections, increase saturation, enhance contrast, making the pictures more three-dimensional and transparent, preventing overexposure. Multi-layer nano-coating, water-proof, oil-proof, anti-fouling and scratch-resistant performance. High-defination grinding ACG optical glass lens, brings you clear imaging and restoring the subjective viewing angle experience. Buckle design, quickly disassembled, the installation is firm, lightweight design, strong and durable, and long service life. Specifications: Material: PC+Optical Glass Size: Approx. 21.35x16.95x3.85 mm/ Process: for nano multi-layer coating Type: GND16, ND Filters Set(optional) Applicable Model: for Mini 3 Pro Note: Other demo accessories are not included. 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: 1x/3x Lens Filter(2 Choices Optional)