AfterShokz AS320 Sportz 2 Open Ear Sports Headphones, Bilingual Packaging, Black AfterShokz Sportz 2 headphones sit comfortably in front of the (not in or over the ear) and utilize patent pending bone conduction technology to deliver stereophonic sound through the listener's cheekbones to the inner ear Open ear design lets you make/take phone calls and stay connected to your music and the outside world - even when skiing, running, biking etc. Hear important sounds, including oncoming traffic, car horns, ambulances or other warning noises, potentially preventing accidents More comfortable and stable than earbuds or traditional headphones, especially when used over extended periods of time Reflective silver safety strip on back of headband for added visibility and safety during activities