MEElectronics NoiseSHIELD NS63 - Manual (Page 18)

Specifications
40 mm cobalt magnet dynamic driver
20 Hz to 20 KHz
32 ohms + 15% @ 1K 1mW
108 dB
12 dB at 300 Hz
2 x 1.5V AAA battery
Up to 32 hours with ANC active Driver:
Frequency response:
Impedance:
Sensitivity:
Active noice reduction:
Power requirements
Battery life
15
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