Truly wireless Discover the freedom of a wireless lifestyle listening to music, managing your calls or working out. 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. Easy controls Take full control of your calls and music with a single intuitive button. Comfort Stay Secure Fit Best-in-class 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 IPX5-certified design keeps the music playing through sunshine and rain.