Sennheiser MKE 200 Camera-Mount MicrophoneSince the MKE 200 operates on plug-in power (2 to 10V), no batteries are required to run the microphone. Just hook up the MKE 200 to your camera or mobile device and forget about having to check, swap, or charge batteries. Understanding that the MKE 200 may be used in challenging shooting conditions, Sennheiser designed the MKE 200 with built-in wind protection, enabling the mic to lessen undesirable wind noise from breezes, fans, heaters, and air conditioners without requiring that you slip on a separate foam windscreen. For maximum reduction of wind noise in outdoor environments, use the included furry windshield.