This camera has a built-in microphone but does not require any additional cables since the video and audio are transmitted on the same cable*.
 
Features:
2560x1944 Resolution
Audio by Coaxitron*
2.8mm Lens
Infrared for Night Vision
4-in-1 Video Output: switchable between TVI, CVI, AHD and CVBS
Material: Metal
IP66 Protection Level
Power: 12V
 
*The audio will ONLY work with compatible DVRs.