TRUE WIRELESS EARBUDS: Discover the freedom of true wireless earbuds for a life on the go. Workout, listen to music, and manage your calls using wireless headphones with microphone. . HANDS-FREE CALLS AND MONO CALL MODE: Bluetooth headphones with microphone for clear audio during phone calls. Automatically switches to mono when making phone calls, for a more natural call experience. . COMFORT STAY SECURE FIT: Bluetooth headphones with 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 wireless music and calls playing through sunshine and rain. . UP TO 24 HOURS OF COMBINED PLAYBACK + SMART CHARGING CASE: Enjoy an entire day of wireless audio, with up to 4 hours of continuous playback in the earbuds and up to 20 hours of backup power from the charging case. Smart charging case provides a 15-minute quick charge for 1 hour of music playback.