2MP 1080P Bullet Camera with Microphone-With built-in microphone in the camera It can support a one-way audio, you can hear the other party talking, but not the conversation.And you need to make sure your DVR support Audio input. Compatibility -This is HD-TVI Security Camera,It only Compatible with HD-TVI Analog DVR Systems,if you want Audio Recording,please make sure you DVRs support Audio input.But It work well with ZOSI DVR (Model:ZR08VN00,ZR08VN10, ZR08VN20) 120ft Night Vision-Built in 36pcs IR LEDs, Get a sharp and crisp image day or night with the camera's automatic IR-CUT filter. Up to 120ft night vision in total darkness and 160ft Night vision in ambient light. More than 3.0Lux the night vision is color. IP66 Weatherproof,Indoor and Outdoor use-Aluminum metal vandal proof & waterproof can withstand the toughest of outdoor conditions,adjustable 3-axis camera stand, cable through bracket for hassle free use in rainy or snowy days. NOTED-This wired camera