Marshall Monitor II Active Noise Cancelling Over_Ear Wireless Headphones Bluetooth Headphones with Mic, Black Brand Marshall Colour Black Ear Placement Over Year Form Factor above the ear Impedance 32 Ohm About this item Active noise cancelling technology that constantly pinpoints and measures ambient noise to block out the things you don't want to hear. Now you can focus on what matters most - the music. Up to 30 hours of wireless playtime with active noise cancellation and 45 hours without noise cancellation Collapsible design and compact size makes for the ultimate travel companion Multi-directional control knob - play, pause and shuffle your music, adjust the volume and control phone functionality Travel Kit - USB-C charging cable, 3.5mm cord and carry bag to haul it all away Power Source Type: Battery Powered