3K Two Way Audio Fixed Bullet - High quality imaging with 3K, 2960 × 1665 resolution - 2.8 mm, 3.6 mm fixed focal lens - Up to 40 m white light and 40 m IR distance for bright night imaging - Smart-Hybrid Light, optimize your security with flexible lighting options - High quality audio with audio over coaxial cable, built-in mic, and built-in speaker - Provide real-time communication via built-in two-way audio - Water and dust resistant (IP67)