omnidirectional type high sensitivity, flat frequency response, light very reliable and shock-resistant miniature size: Ø 10 mm impedance: low standard voltage: 4.5 V current drain: 0.5 mA S/N ratio: 40 dB or more maximum input sound pressure: 120 dB SPL sensitivity: -61±3 dB 0dB (sensitivity): 1V/1µbar, 1KHz Vcc (sensitivity): 4.5V, RL = 1K Ohm (EN)