Feature: Not original. Material: PC + metal + optical glass Lens Material: Optical imaging tempered glass with lens transmittance close to 92%. AR coating applied to increase projection film transmittance above 98%. Waterproof membrane layer with a drip angle of 115 degrees applied to prevent water droplets from remaining on the lens surface and affecting image quality. Waterproof Ring Material: Silicone Product Size: 59.6 + 53 + 35.7mm Note: No retail packaging included. Conversion: 1cm = 10mm = 0.39 inch Please allow 0–1cm measurement deviation due to manual measurement. Ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the actual product color may vary from images shown. Package Contents: 1 set x Lens Guards for Protection