beyerdynamic T1 3rD Generation, High-End Tesla Headphones, Open design, Circumaural, Frequency response: 5 - 50,000 Hz, Impedance: 32 Ohm, SPL (sound pressure level): 100 dB (1 mW), Rated power: 300 mW, Max. SPL: 124 dB (300 mW), Tesla technology, Fabric-covered, plug-in cable; Length: 3 m, Gold-plated 3-pin stereo jack plug: 3.5 mm, Weight: 360 g, Includes a hard case and 6.3 mm adapter, Handmade in Germany