B-Stock, Dan Clark Audio E3 hifi headphones; over ear; closed back; magentostatic; impedance: 27 Ohms; sensitivity: 90 dB/mW; 5th generation Planar-Magnetic driver; Acoustic Metamaterial Tuning System (AMTS); distortion: <0,1 % at 80dB white noise; detachable cable; two sided cable; ear cups partly made of Gorilla Glass; delivery content: E3 headphones, Vivo cable with 1,8m length and 6,3mm stereo jack; weight (without cable): 455g, B-Stock with full warranty, may have traces of use.