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accurate typing
Speech Enhancement: Turn on the speech enhancement feature to hear the clearer dialogue
it's working powerless than 10mA in the working condition without a voice
per Earpiece
This is the key to reduce the noise levels significantly and satisfy even the pickiest audiophiles
Etymotic ER4-SR Studio Reference In-Ear Isolating Earphone with Replaceable Cable - Black hp 8300 sff review accurate typingBrand Etymotic Research Colour Black Ear placement In Ear Form factor In Ear Impedance 45 Ohm Noise control Sound Isolation Sensitivity 45 Ohm Headphone jack Detachable Connector Model name ER4SR Connectivity technology Wired About this item Enhanced accuracy with greater sound output and flat response ACCU Driver balanced armature, precision matched, custom tuned drivers Braid reinforced cable for enhanced durability and low microphonic effect ACCU
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