Hama RMZ-16 Zoom Directional Microphone Description. The Hama RMZ-16 Zoom Directional Microphone is a high performance microphone ideal for both professional & casual use & suitable for all camcorders DSLR cameras & compact system cameras that feature a 3. 5mm stereo microphone input. The Hama RMZ-16 Zoom Directional Microphone uses 1x AAA type battery not included.