Etymotic ER4® Earphones EXTENDED RESPONSE Brand new. Over 30 years ago, Etymotic invented noise-isolating, in-ear earphones. Etymotics original design, developed for auditory research and hearing testing, used balanced armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones.
ER4 earphones were the first high-fidelity, noise isolating in-ear earphones to use this technology in a consumer earphone, and are recognized as the world leader for response accuracy to which all other earphones are compared. First earphones to completely seal the ear. 98% (35 dB - 42 dB) noise isolation highest of any earphones or headsets on the market today. Reduction of outside noise reduces the risk of listening at unsafe levels.
Cord with 3.5mm gold plated stereo plug. Filter removal tool and replacement filters.
The item "Etymotic ER4 Earphones EXTENDED RESPONSE Brand new CHRISTMAS SALE" is in sale since Friday, November 8, 2019. This item is in the category "Sound & Vision\Portable Audio & Headphones\Headphones". The seller is "bestbuybestprice18" and is located in Lowestoft. This item can be shipped to United Kingdom, Antigua and barbuda, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Australia, United States, Bahrain, Canada, Brazil, Japan, New Zealand, China, Israel, Hong Kong, Norway, Indonesia, Malaysia, Mexico, Singapore, South Korea, Switzerland, Taiwan, Thailand, Bangladesh, Belize, Bermuda, Bolivia, Barbados, Brunei darussalam, Cayman islands, Dominica, Ecuador, Egypt, Guernsey, Gibraltar, Guadeloupe, Grenada, French guiana, Iceland, Jersey, Jordan, Cambodia, Saint kitts and nevis, Saint lucia, Liechtenstein, Sri lanka, Macao, Monaco, Maldives, Montserrat, Martinique, Nicaragua, Oman, Pakistan, Peru, Paraguay, Reunion, Turks and caicos islands, Aruba, Saudi arabia, South africa, United arab emirates, Ukraine, Chile, Bahamas, Colombia, Costa rica, Guatemala, Honduras, Jamaica, Kuwait, Panama, Philippines, Qatar, Trinidad and tobago, Uruguay, Viet nam.