A new digital microphone designed specifically to work with the EOS R3 ’ s Multi-Function Shoe aims to take video shooting to the next level . The Multi- Function Shoe provides power supply and advanced communication link for the transmission of audio signal from the microphone . This allows for a battery-less and cable-less design , eliminating the risks of running out of battery or accidental detachment of cable . There are three mic directions to select from – shotgun , 90 degrees and 120 degrees . All settings are done via the camera menu and there is a dedicated Menu button at the back of the microphone to instantly trigger the mic setting page in the camera menu .