Wireless in-ear headphones with up to 25hrs battery life, Quick Charging, equalizer, DSEE, IPX4 water resistance rating, and compatibility with the Sony | Headphones Connect app. Features: The WI-C100 wireless in-ear headphones offer great value, with a wealth of features including long battery life, high-quality sound, splash-proof design, and compatibility with the Sony | Headphones Connect app.  Enjoy up to 25 hours of non-stop music. And if your headphones are running low on power, a 10 minute quick charge will give you up to 60 minutes of playback When an original music source is compressed, it loses the high-frequency elements that add detail and richness to a track. Our Digital Sound Enhancement Engine (DSEE) faithfully restores them to produce high-quality sound that’s closer to the original recording. [A] Restoration  [B] Fine sound restoration Tailor your sound to your personal preference. Choose from a variety of presets to match the genre of music you’re listening