The wireless dynamic ANNY® handheld microphone with cardioid capsule transmits with the B6 frequency band in a frequency range of 655 - 679 MHz. With an output power of 10 mW, the wireless microphone allows audio transmission up to 80 metres. The microphone is easily and conveniently synchronised with the ANNY® receiver via infrared. Powered by two AA batteries (included), the ANNY MD can operate for up to eight hours without a battery change. A built-in status LED gives a white light when switched on and a red light when the battery is low.