The JBL Tune 510BT headphones let you stream powerful JBL Pure Bass sound with no strings attached. Easy to use, with up to 40 hours of battery life and speed charge, they are super lightweight and comfortable. Grab them and fill your day with music!The Tune 510BT wireless headphones feature renowned JBL Pure Bass sound, which can be found in the most famous venues all around the world.With Wireless Bluetooth 5.0 Streaming, you can stream wirelessly from your device and even switch between two devices so that you don't miss a call.For long-lasting fun, listen wirelessly for up to 40 hours and recharge the battery in as little as 2 hours with the convenient Type-C USB cable. A quick 5-minute recharge gives you 2 additional hours of music.Easily control your sound and manage your calls from your headphones with the convenient buttons on the ear-cup.Siri or Hey Google is just a button away: activate the voice assistant of your device by pushing the multi-function button.