BOSE ULTRA OPEN EARBUDS BLUE 6-33-RT1903D couriering top-secret intelligence to the

couriering top-secret intelligence to the Allies

Over-ear headphone design

Operating humidity range: 20 to 80% RH

The HDR Effect

and much more

BOSE ULTRA OPEN EARBUDS BLUE 6-33-RT1903D couriering top-secret intelligence to the*Open your ears to the world: Now with smoother ear to ear syncing and a more refined experience when not playing content. Hear all of what's around you while enjoying rich, private sound. The earbuds' open ear design says, ''I can still hear you'' while OpenAudio technology provides you with high quality, private sound. *Be in the music anywhere, everywhere: Get your run on, take a call, go all day. Do whatever your thing is and pause for nothing.