The JBL Tune 520BT headphones stream powerful JBL Pure Bass sound thanks to the latest 5.3 BT technology. Easy to use, these headphones provide up to 57 hours of pure pleasure and an extra 3 hours of batter with just 5 minutes of charge. Download the free JBL Headphones App and customise your sound through the EQ, while Voice Prompts guide you through the headphones features. Manage calls, sound and volume from the earcup, thanks to the convenient button control. Wireless Bluetooth 5.3 technology. Wirelessly stream high-quality sound from your smartphone without messy cords with the help of the latest Bluetooth technology. JBL Pure Bass sound. The JBL Tune 520BT utilises the renowned JBL Pure Bass sound, the same technology that powers the most famous venues all around the world. Customise your listening experience. Download the free JBL Headphones App to tailor the sound to your taste with the EQ. Voice prompts in your desired language guide you through the Tune 520BT features.