Item Type: Fixed Focal LensMaterial: ABSMinimum Aperture: F1.0Wide Angle: 104 DegreesFocal Length: 4.0mm5%Optical Back Focus: 3.94mm0.2Package List1 x Fixed Focal Lens15MP HD LENS: 5MP lens, providing HD images with good color reproduction and clearer observation of objects. High resolution, low illumination without any auxiliary light source to display a clear color image. 2HIGH COMPATIBILITY: Fixed focal lens high compatibility, can adapt to most security cameras. Aperture can be fixed and locked, more convenient. Professional manufacturing, excellent characteristics and high reliability. 3UNIVERSAL FIXED FOCAL LENS: Universal fixed focal lens can objectively record and reflect the speed and rhythm of the subject's movement changes. Suitable for electronic microscopes closed circuit television security cameras, etc. 4EASY TO USE: Prime lens is easy to install and remove, does not affect the installation and use of other accessories. Very convenient and practical, with its help, you will get better performance. 5ROBUST AND DURABLE: Security camera lens is made of premium ABS material with strong and durable construction. HD lens can provide you with high definition images, excellent color reproduction, less noise and less distortion.