Concerning this item The sound of JBL Pure Bass: JBL has been creating the clear, striking sound heard in large venues all over the world for more than 70 years. These headphones replicate the same JBL sound, delivering a powerful and deep bass punch. 35H BATTERY LIFE WITH BT+NC | 2H RECHARGING TIME: You can listen wirelessly for 50 hours with ANC off or 35 hours with active noise cancellation for extended enjoyment. Quickly recharge the battery in two hours. Voice control and hands-free calls: With the button on your earcup, you can effortlessly manage your calls, adjust the sound, and activate voice assistants from your headphones. Listen to your music to engage in active noise cancellation. Turn off the noise. FOLDABLE DESIGN AND LIGHTWEIGHT: Compact and lightweight