JBL PURE BASE SOUND: Packed with 32mm Dynamic drivers, the JBL Tune 510BT features the renowned JBL Pure Bass sound, which can be found in the most famous venues all around the world.;UPTO 40 HOURS PLAYTIME: Designed for long playhours, the Tune 510BT allows you to Listen wirelessly upto 40 hours non-stop under optimal audio settings