Etymotic ER4 XR Noise-Isolating Earphones with Etymotion Wireless Bluetooth Cable (Open Box) cable not detachable 99% pure cryogenically treated silver

99% pure cryogenically treated silver wire construction

aluminum Fabric finish Fabric finish

The PRO X USB-C cable can be connected to all commercially available smartphones

0 kg (net) | 4

Stealth Magnets technology for acoustically invisible magnets

Etymotic ER4 XR Noise-Isolating Earphones with Etymotion Wireless Bluetooth Cable (Open Box) cable not detachable 99% pure cryogenically treated silverOver 30 years ago, Etymotic invented noise isolating, in ear earphones. Etymotics original design, developed for auditory research and hearing testing, used balancedarmature receivers and established these speakers as the true reference standard for high definition, in ear earphones. Paired with the new Etymotion Wireless Bluetooth cable these earphones are unstoppable and sound better than anything else on the market today. With built in