Enjoy superb musical reproduction and noise cancelling with these Enhanced Active Noise Cancelling Earphones from Tech Choice. These earphones feature an inline active noise reduction (ANR) module which helps eliminate up to 99% of external noise. The ANR module is powered by a single AAA alkaline battery (included) which can provide up to 50 hours of active noise reduction. Note that use of the ANR function is optional; the earphones can be used without installing a battery or powering on the ANR module. When used without the ANR function these earphone provide up to 22dB passive noise reduction.
Frequency Response 20Hz ~ 20KHz
THD (94dB SPL @ 1KHz) < 1%
Active Noise Cancellation 99% (1)/ 92% (2) / up to 22dB (3)
Passive Sound Isolation: 35dB
Driver: Dynamic 9mm, Neodymium magnet
Driver Impedance: 32 ohms at 1KHz
Power Source: 1x AAA alkaline battery
Battery Life up to 50 hours
Low Power Indication Flashing LED
Connector Type 3.5mm TRRS (CTIA standard)
Dimensions: 0.6" x 2.3" x 0.9" (14 x 58 x 21.6 mm)
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