Sennheiser HD 800 Brochure & Specs page 3

A masterpiece built by handcraft
Sennheiser's most advanced driver technology: 56 mm ring
radiator driver (patent pending)
Biggest coil (40 mm) and magnet (42 mm) yet to deliver
natural sound fi eld
Curved sonic wave front simulates spatial hearing experience
(patent pending)
Metal headband with inner damping element (patent pending)
Four wire OFC cables with gold plated plugs
Handcrafted ear pads, made of high-quality microfi ber fabric
Special high precision headphone connectors
Type: open, circum-aural dynamic stereo headphones