ELECOM EHP-CH3000SGN Hi-Res Stereo in Ear Ergonomic Fit Earphones, Dark Green High-Resolution Audio Capability - supports HRA format audio which captures music at a 3x higher rate than CD audio, resulting in uncompromised sound quality Multilayer Film Polyester Diaphragm - sturdy MLF diaphragm produces more consistent and precise sound across entire frequency range 12.5mm Neodymium Driver - ensures full-frequency response across a wider frequency range from 5 Hz to 40000 kHz High-Strength Aluminum Housing - rigid and lightweight housing reduces resonance and prevents distortion On-Cable Microphone and Remote Control allows for Hands-Free Calls, Volume Adjustment, and Switching Tracks without touching your device.