This is a 1.8mm 170° wide-angle board lens for CCTV cameras. It displays excellent performance, clear and distortion-free images Includes standard M12x0.5 thread suitable for 1/3-inch and 1/4-inch CCD chipset cameras 170° wide angle provides a wider field of view and F2.0 opening infrared lenses are ideal for all lighting conditions, especially at night For customer peace of mind, there is an 18-month warranty from the date of purchase. If you have any questions during use, please do not contact us Be sure to check the detailed product description at the bottom and precautions before purchasing! To request a return or exchange, please note that it is mandatory to provide a video of the unpacking of the package.