The JBL Tune 520BT

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 battery with just 5 minutes of charge. Download the free JBL
Headphones App and customize 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. If a call comes in while you are watching a video on
another device, the JBL Tune 520BT seamlessly switch to your mobile,
so you never miss a call. lightweight and comfortable even after hours
of listening, the JBL Tune 520BT headphones fold flat in your backpack
to follow you everywhere.