3 ms·

Sure, but are you wearing IEMs while running? Sound isolation isn’t a virtue in that case.

• falcolas 9y ago
  > Sound isolation isn’t a virtue in that case It's only around 20-25db of isolation, so unless you really have your music cranked, you can still typically hear vehicles (and can definitely hear horns). I know a few people who love IEMs for exercising (including running), since they pretty much never fall out unintentionally. You can't even really pull them out by the cord.