The EM-77 (MIC-SJEM77) from Trantec alows freedom of movement to the user without comprimising on sound. The omnidirectional pickup pattern allows perfect broadcast of the spoken word and vocals making it perfect for conference, presentaion and educational use along with theatre and performances too.
Terminated in a 3.5mm jack plug the single sided headset microphone is compatible with the S4.04 and S4.10 belt pack transmitters.
If you're looking for a bit more info then here you go:
- Polar Pattern: Omni directional
- Transducer Type: Back Electret condenser
- Operating Voltage: 1.5-10 volts min/max
- Sensitivity: 5mV/Pa +/-3dB
- Frequency response: 20Hz - 20KHz ±3dB
- Termination: 3.5mm mini jack