The Sony Mdr-M1 Professional Reference Closed Dynamic High-Fidelity Monitor Headphones in Black boast an extremely lightweight design, which weighs 216g. This set contains Sony Mdr-M1 Professional Reference Closed Dynamic High-Fidelity Monitor Headphones (Black), Headphones Cable (Approximately 1.2m and 2.5m - Stereo Mini Plug), Plug Adapter (Stereo Standard Plug - Stero Mini Plug) , Reference Guide, and Warranty Card.