-
QM-900C
- Priority Buttons
- Mic ON/OFF Buttons
- Built in 2W Speaker
- Volume Control
- Unidirectional Condenser Mic
- Red Light indicate mic is ON
-
QM-900D
- Mic ON/OFF Buttons
- Built in 2W Speaker
- Volume Control
- Unidirectional Condenser Mic
- Red Light indicate mic is ON