Feature: 1. Compatibility: Premium single board lens is fit for all M12x0.5mm base IP camera that can better meet your needs. 2. Detail Information: The aperture size is F2.8, the focal length is 2.8mm, and the pixel is 5MP, which brings you reliable use experience. 3. Reliable Material: HD security webcam camera is made of precise aluminium alloy material, sturdy and durable, long service life. 4. Features: Compact structure and high precision, professional manufacturing, exquisite craftsmanship, practical and useful. 5. Simple Operation: Easy to install and disassemble, does not affect the installation and use of other accessories. Specification: Item Type: IP Camera LensMaterial: Aluminium alloyChip Sensor: 1/2.7in Focal Length E.F.L: 2.8mm Rear Focal Length F.B.L: 2.85mmAperture Size F No. : F2.8 Optical Total Length (mm) : Approx: 15.6mm/0.61inField of View: Diagonal: 102°Optical Distortion: <1%Work Temperture (℃): -20℃-60℃ conventionalDimensions(mm): 14 x 15.6mm / 0.5 x 0.6in Interface: M12 Remarks: 4G+IR650 5Mega Pixel . Package List: 1 x IP Camera Lens Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.