Model No.: EM-410U/D with condensor/electret microphone

                  DM-410U/D with Dynamic microphone

Special Features:

Up/Down Buttons on the top for Channel selection

Sensitivity: -66+/-3dB
Impendance: 500ohm
Frequency response: 100-6000Hz
Cable extended : 2000mm
Cable diameter: 6mm/4.5mm optional
Connector type: 6 pins, aerial plug
Trade Mark: Aluminum marking plate
Net Weight: 180g