Etymotic ER3 SE/XR Noise-Isolating Earphones Model:ER3XR Extended Response 30 hours (when only Bluetooth portable
Yard notes & kiln story
Description
Etymotic ER3 SE XR Noise Isolating Earphones Model:ER3XR Extended Response 30 hours (when only Bluetooth portable 30 hours (when only Bluetooth used)** Acoustic absorber system prevents frequency masking for unheralded detail Assortment of ear tips balanced armature micro drivers Noise Isolation 35 42 dB Impedance (@1kHz) 22 Ohms Sensitivity (@1 kHz) SPL at 0