Features 1, Material: Prime lens is made of aluminium alloy material, high strength, high temperature resistant, rustproof and durable. 2,Excellent Performance: 3MP high resolution CS mount lens, with low distortion, high compatibility, can adapt to most security cameras. 3,Adjustable Aperture: Camera lens with manual focus and adjustable aperture, also can be fixed and locked, convenient for using. 4,High Accuracy: Focusing ring is easy to grip, provides very accurate focus to achieve high accuracy shooting, more practical. 5,Easy Installation: Easy to install, no complicated operation is required, with 12mm focal length, 1 or 2in format, 28.5° field angle. Specification Item Type: CS Mount Lens Material: Aluminium Alloy Purpose: Surveillance camera, DIY Model: CW FM1214 3MP Focal Length: 12.0mm Format: 1 or 2in Relative Aperture: 1.2 Mount: CS Field Angle: 28.5° Back Focal Length: 12.53mm Iris: Manual, locking Zoom: - Resolution: 3 Mega Pixel M.O.D: Approx. 0.2m or 7.87in Size: Approx. 30x34mm or 1.18x1.34in Package List 1 x CS Mount Lens 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.