Powerful bass Hear your music your way with a customizable equalizer, available in the Jabra Sound+ app Enhanced sound performance 4-microphone technology for crystal clear calls Closed acoustic design to reduce surrounding noise Up to 7 hours battery and up to 28 hours with charging case Get 1 hour of battery from 10 minutes of charging in the charging case Use either earbud and be in complete control of your listening Lightweight for a comfortable and secure fit IP55-rated rainproof protection