Inspired by Marshall heritage, Monitor II A. N. C headphones are authentic yet modern, delivering high performance sound like you've never heard before. Advanced active noising canceling technology blocks out the n noise, letting you focus on what matters most - the music. Featuring custom tuned 40 mm dynamic drivers, these headphones produce a superior signature sound only Marshall can deliver. Engineered for an all-day listening experience, they boast up to 30 hours of wireless playtime with active noise canceling and up to 45 hours without, meaning you'll never miss a beat. While the unique ergonomic construction means no matter how hard and heavy the music, they will rest lightly on your head for the perfect fit. Monitor II A. N. C headphones are truly made for the long haul. ActiveNoice Cancelling Monitor II A.N.C. headphones utilize advanced active noise cancelling technology that blocks out the noise, letting you focus on what matters most – the music. Up to 30 Hours of Wireless Playtime Monitor II A.N.C. headphones keep the music going strong with up to 30 hours of wireless playtime with active noise cancelling and up to 45 hours without. Take Control of What You Hear Multi-Directional Control Knob: Control your music and phone functionality. ANC Button: Toggle between active noise cancelling, Monitoring Mode or turn off active noise cancelling all together. M-Button: The multi M-button lets you switch between three equalizer presets or alternatively, access your voice assistant on-the-go. Ergonomic Design Monitor II A.N.C. headphones deliver an ergonomic all-day listening experience with a unique over-ear design. Super soft ear cushions and a plush headband with metal swivel rotation hinges perfectly adapt to any head shape for sealing and comfort.