The BeoPlay H3 in-ear headphones feature a custom 10.8mm transducer and the new Micro Bass port, which allows you to reproduce the entire sound spectrum with a balanced and dynamic tone on your iPhone, iPad or iPod. The structural rigidity of the unibody aluminum structure also makes it possible to reproduce sounds with great precision. Add to that the 23 ventilation holes, and you get headphones that deliver a natural and open sound spectrum.