Headphones and headsets: Etymotic ER 4PT MicroPro Earphones

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Etymotic ER 4PT MicroPro Earphones

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headphones, in-ear, registration closed, 20-16000 Hz, 27 Ohm, cable 1.5 m, connector 3.5 mm, noise reduction

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General information (Etymotic ER 4PT MicroPro Earphones)
Release date on the market	2012
Main (Etymotic ER 4PT MicroPro Earphones)
Type	headphones
Design	ear
Acoustic design	closed
Wireless interface
Design features (Etymotic ER 4PT MicroPro Earphones)
Foldable design
Cable length	1.5 m
Surround sound
Plug	3.5mm
Volume control
Specifications (Etymotic ER 4PT MicroPro Earphones)
The lower boundary frequent. range	20 Hz
The upper border is frequent. range	16 000 Hz
Nominal impedance	27 Ohm
Sensitivity	102 dB/mW
Detachable cable
The active noise cancellation	passive

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