The JBL Tune 520BT headphones stream powerful JBL Pure Basssound thanks to the latest 5.3 BT technology. Easy to use, theseheadphones provide up to 57 hours of pure pleasure and an extra 3hours of battery with just 5 minutes of charge. Download the free JBLHeadphones App and customize your sound through the EQ, whileVoice Prompts guide you through the headphones features. Managecalls, sound and volume from the earcup, thanks to the convenientbutton control. If a call comes in while you are watching a video onanother device, the JBL Tune 520BT seamlessly switch to your mobile,so you never miss a call. lightweight and comfortable even after hoursof listening, the JBL Tune 520BT headphones fold flat in your backpackto follow you everywhere. JBL Pure Bass SoundWireless Bluetooth 5.3 technologyCustomize your listening experienceUp to 57H battery life and speed charge (5mins = 3H)Hands-free calls with Voice AwareMulti-point connectionsLightweight, comfortable and foldable designAsk Siri or Hey Google