Polar Pattern CardioidFrequency Response 40 Hz to 15 kHz , SPL Maximum: 130 dB , Dynamic Range 110 dBRF Output 10 mW , IR node for Scan-Link operationPower Requirements 2 x AA batteries , Battery Life >15 hrsSoftTouch power switch , Power switch can be used for both on/off function, and to mute/unmute the audio
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