Featuring ultra-short 19.1mm TTL optical design, effectively reduces optical module thickness and enables ultra-thin device integration. With F1.6 large aperture, 1/2.7" sensor and 4K resolution, it delivers bright, clear, detailed images day and night. Day-night co-axial technology ensures 24-hour stable focus without manual adjustment, while 111.2° ultra-wide angle provides wide coverage and minimizes blind spots. This high-performance fixed focus lens has compact structure, easy to integrate, ideal for security cameras, smart home devices and other professional imaging applications.