The Positive Vibration XL professional-grade over-ear headphones provide superior soundBluetooth connectivity allows you to listen to music or answer the phone wirelesslyHybrid active noise cancellation technology removes background noise and distractionsEcho reduction and sound isolation provide improved audio quality40mm hi-definition drivers deliver powerful, balanced audio Remote function lets you control volume and playback when your device is out of reachOnboard microphone allows voice command activation and hands-free callingPremium memory foam padded ear cushions and headband are water- and sweat-resistantCrafted from sustainable materials so you can feel better about your purchaseQuick-charge technology provides you with 26 hours of playtime with Active Noise Cancelling turned on, or 35 hours with it turned off