Sennheiser adapter 3.5mm screw type socket to 6.35mm jack plug - 543684
Sennheiser headphone carrying pouch with drawstring (250mm x 300mm) - 528104
Sennheiser Leatherette Earpads - Black - 534441
Sennheiser extension cable. 3.5mm jack plug to 3.5mm socket (1.6m) - 534446
