Pure bass. Zero cables. JBL by Harman Tune 520BT Bluetooth On-Ear Headphones stream powerful JBL Pure Bass sound thanks to Bluetooth 5.3 technology. These JBL headphones provide up to 57 hours of pure pleasure and an extra 3 hours of battery with just 5 minutes of charge time. Download the free JBL Headphones app and customize your sound through the EQ, while voice prompts guide you through the headphone features. Manage calls, sound, and volume right from the ear cup thanks to the convenient button control. If a call comes in while you're watching a video on another device, the these headphones seamlessly switch to your phone, so you never miss a call. Lightweight and comfortable even after hours of listening, JBL 520BT give you the ultimate in audio convenience and performance. JBL Pure Bass sound Bluetooth 5.3 wireless connectivity Up to 57 hours of run time with an extra 3 hours of battery with just 5 minutes of charge time Button control to manage calls, sound, and volume right on the ear cup Auto-switches from other devices to your phone for incoming calls Fold-flat design to take up less space on your desk or in your backpack