Etymotic hf2
May 8th, 2008 | by Mike Kobrin
Specs
Compatible with iPhone and other mobile phones
Response accuracy of Etymotic's ER-4 earphones
Highest noise isolation of all competing headsets
3.5mm stereo plug makes the hf2 compatible with any music player
Includes:
High-fidelity, hands-free, noise-isolating headset + earphones with 4 ft. cable
Assorted eartips
Filter tool with 2 replacement filters
Storage pouch
Compatibility
Works with iPhone and other music phones that operate with a 3.5 mm/4-contact phone + stereo plug.
Compatible with most music players (e.g., iPod, MP3, CD) that accept a 3.5 mm stereo plug.

by AJ on July 31, 2008:
“I got a pair of these Hf2s after reading the reviews. Sound was indeed great for the first few hours... then they came apart. Well, I unfortunately snagged the cord on the desk. They did not pop out of the ear as one expects with other in ear designs, instead...” More...