Bluetooth® technology lets you connect to your smartphone or tablet for music, movies, and calls. Custom speakers and tuning deliver vivid, high-resolution sound, while the earbuds block out noise and seal in a rich listening experience. We 3D-mapped the human ear to create comfort-fit eartips that stay put even when you don’t. Three sizes of cushioned eartips and stabilizers make the fit custom and comfortable for active use and all day wearing. A nano-coating by P2i protects the earbuds from light rain, humidity, and sweat. Convenient inline controls let you adjust volume, skip tracks, take a quick call, or ask your smartphone to play a favorite playlist. Up to 6.5 hours listen (earbuds); charging case provides up to a total of 13 hours power for recharging earbuds.