All plastic constriction with no obvious build quality issues. Comes with a in-line mic with 1 button to play/pause or pickup/hang up. The plug, strain relief, and earbuds have this weird quarter of a circle shape. Feels light in the ear because of the all plastic construction. Nothing special or out of the ordinary for the price.The sound is definately out of the ordinary for the price range. Without going into a esoteric audiophile talk, the sound is organic, fun and lively. Not perfect but shines where it matters most. There will not be enough bass for bass-heads but it is there, clean and somewhat punchy. Get a good fit and seal. If you remove the ear pieces and it feels like you just popped a tiny suction cup off, you got a good seal.Word of caution, these earbuds are not forgiving to low quality audio files. They will sound hollow, thin and lifeless.Had more fun with these than my triple driver hybrids that cost more. And these are easy to drive, amp is not needed for them to sound good.Sound is subjective but at this price point you're not set back that much if you don't like them.
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