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5mm audio out or RCA audio out port
Noise isolating design
1 × Charging dock to charge headphone and as transmitter
5mm) audio plug
Connectivity Technology: Wired/Wireless
Etymotic Research ER4SR Studio Reference Precision Matched In-Ear Earphones Global Teck 5mm audio out or RCABrand: Etymotic Research Color: Black Features: High performance balanced Armature drivers are precision matched to within 1 dB Sleek, anodized, laser etched aluminum body Braided, reinforced 5ft detachable MMCX cables 35 42 dB of noise isolation with a max output of 122 dB Precision machined metal bodies with anodized finish Publisher: Etymotic Research Details: The Etymotic Research ER4SR is the new reference standard in ear monitor for those who