eTruly wireless- Discover the freedom of a wireless lifestyle listening to music, managing your calls or working-out.JBL Signature Sound- Immersive JBL Signature Sound delivered in an intuitive, intelligent package.24 hours of combined playback- Enjoy an entire day of wireless audio, with 4 hours of continuous playback and 20 hours of backup power from the charging case.Smart charging case- Protect the headphones and charge them when not in use. Provides over 20 hours of total backup charge, with a 15-minute quick charge for 1 hour of music playback.Handsfree calls- Integrated microphone for clear phone calls. Automatic stereo-mono mode switching for a natural call experience.Call mode- Automatically switches to mono when making phone calls, for a more natural call experience.Comfort Stay Secure Fit, Splashproof.