The Positive Vibration XL professional-grade over-ear headphones provide superior sound Bluetooth connectivity allows you to listen to music or answer the phone wirelessly Hybrid active noise cancellation technology removes background noise and distractions Echo reduction and sound isolation provide improved audio quality 40mm hi-definition drivers deliver powerful, balanced audio Remote function lets you control volume and playback when your device is out of reach Onboard microphone allows voice command activation and hands-free calling Premium memory foam padded ear cushions and headband are water- and sweat-resistant Crafted from sustainable materials so you can feel better about your purchase Quick-charge technology provides you with 26 hours of playtime with Active Noise Cancelling turned on, or 35 hours with it turned off