Electret lapel mike

Specifications:

Direction
: omnidirectional microphone button
Bandwidth: 50 Hz to 16
kHz
Sensitivity: 5.6 mVa/1
kHz
Impedance: 1 kOhm
Max. sound
pressure: 120 dB
Signal/noise rate: > 40
dB
Connection: male jack plug 3.5 with 4 m connection
lead
Power supply: LR-44 1.5 V button battery (in the jack
plug)
Dimensions: Ø 11.6 mm x 5.4 mm
Microphone
dimensions: Ø 12 mm x 23 mm