UM-90
HEADPHONE
Loudhailer diameter : 30mm
Frequency range : 20~20000Hz
Sensitivity : 110dB
Impedance : 32 Ohm
Cable length : Approx.1.8m(Volume Control)
Maximum power input : 80mW
plug(mm) : 3.5 Stereo

MICROPHONE
Type : Electret Condenser Microphone
Polar pattern : Omni-directional
Impedance : Low
Sensitivity : -58dB(+/-3dB)
Operating Voltage : 3V
Frequency Response : 30-16000Hz