Etymotic ER4 XR Noise-Isolating Earphones with Etymotion Wireless Bluetooth Cable (Open Box) rca VISION EARS is a small

VISION EARS is a small

The combination of hard and soft diaphragm materials results in clear

004% @ 1kHz

2 x Optical TOSLink (up to 24bit/96kHz)

100 hours (NC OFF)

Etymotic ER4 XR Noise-Isolating Earphones with Etymotion Wireless Bluetooth Cable (Open Box) rca VISION EARS is a smallOver 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