Ultra Open Earbuds feature a brilliant combination of innovative open ear design, incredible audio, and all day comfort. With a cuff like fit, Ultra Open Earbuds leave your ears open to hear the world around you while OpenAudio technology delivers rich, private sound. Spatialized sound puts you in the music. Rich, high quality, private sound. Pair seamlessly with Bose smart soundbars and speakers. Up to 7 hours of play time up to 4 hours with Immersive Audio or Auto Volume or up to 48 hours of standby and up to an extra 19.5 hours of battery life in the charging case. Take personalization even further with Adjustable EQ settings in the Bose app. Control bass, mid range, and treble levels as you go. With multipoint connectivity, you can seamlessly connect to two devices simultaneously via Bluetooth