Truly 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 15minute quick charge for 1 hour of music playback. Handsfree calls Integrated microphone for clear phone calls. Automatic stereomono mode switching for a natural call experience. Call mode Automatically switches to mono when making phone calls, for a more natural call experience. Easy controls Take full control of your calls and music with a single intuitive button. Comfort Stay Secure Fit Bestinclass ergonomics with 3 ear tip sizes and 2 gel sleeve sizes ensure a secure fit that stays with you, no matter what you are doing. Splashproof IPX5certified design keeps the music playing through sunshine and rain.