ER4XR Manuals & User Guides

ER4XR ER4SR User Manual CAUTION Etymotic earphones exclude most external sounds. It is unsafe to use in-ear earphones while operating a motorized vehicle, operating machinery, bicycling or jogging, because you may not be alerted to potential danger. In rare instances…

Etymotic Research ER4XR Response Precision Matched In-Ear Earphones Introduction Etymotic earphones exclude most external sounds. It is unsafe to use in-ear earphones while operating a motorized vehicle, operating machinery, bicycling or jogging, because you may not be alerted to potential…