Microphone loudspeaker ML77/ML77-D

solid plastic housing
1 push-to-talk button "PTT" &
2-3 push-buttons for remote control
volume control
holding device for HV7 on housing front side
electret microphone (unidirectional, noise compensating)
built-in loudspeaker (150 Ohm/0.1 watts)
0.32m* PUR-spiral cable up to 12-wired, overall-shielded
holder HV7
l - w - d = 104 - 52 - 33mm; 160g
option: preamplifier,customized connectors, various spiral cables,
other push button functions and impedances

unstretched spiral length