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Battery Power: Up to 10 hours of use (4 hours = fully charged)
Wireless Range: Up to 40ft/12m from USB wireless transceiver
Noise-cancellation: Flexible, noise-canceling microphone
Mic Signal to Noise: >42 dB
Mic Sensitivity: -45 dBV/Pa
Mic Pick Up Pattern: Uni-directional
Mic Freq Response: 100 Hz - 10 kHz
HP Sensitivity: 111 dBSPL/V
HP Max input power: 40 mW
HP Impedance: 32 ohms
HP Freq Response: 20 Hz - 20 kHz
HP Drivers: Dynamic 40 mm