JBL Tune 520BT Wireless On Ear Headphones with Mic Pure Bass Sound Upto 57 Hrs Playtime Customizable Bass App Lightweight BlackAbout this item With up to 57-hour battery life and quick charging of 5min gives 3Hrs playback, you’ll have enough power for multi-day road trips and long festival weekends JBL Tune 520BT feature the renowned JBL Pure Bass sound, the same that powers the most famous venues all around the world Customize your listening experience with JBL Headphones App to tailor the sound to your taste with the EQ. Crystal clear hands-free calls with built-in mic with Voice Aware to manage your calls from your headphones with the buttons on the ear-cup. Multipoint connection allows you to quickly switch between two devices at once