Marshall Major II Bluetooth are on ear Bluetooth headphones with a closed back, so they isolate. The Bluetooth model has much more plush earpads and headband padding than the wired model, making them more confortable, provide a more premium feel and giving you better isolation. The Major II Bluetooth has a long 30 hour battery life, charge from any usb charger or computer and include a cable, so they can be used wired with any non-Bluetooth source. They fold inwards making them easy to carry/pack and have apt-x built in, for near cd-sound quality Bluetooth when connected to most phones and imacs.
The gold control button is like a tiny joystick, looks cool and makes it easy to use the volume/mic/track functions. 1 year warranty.
From Marshall: With the analogue control knob you can play, pause, shuffle and adjust the volume. Phone functionality is also included so you can answer, reject or end a call with a few simple clicks. Wirelessly answer, reject or end a call with the control knob. The built-in microphone allows you to have conversations or record voice memos through your device.