AERIAL7 Royale Bourbon Luxury Stereo Headphones Engineered to deliver the highest-quality listening experience from your Apple iPod, iPhone, BlackBerry, or other mp3 player, cell phone or music device. Superb sound reproduction Over ear, sound isolating design Precise headband adjustment Aluminum outer ear cup housing Ultra soft premium leather ear cushions Full grain, patent leather headband Soft touch ear cup Carry bag included Driver Diameter: 50mm Impedance: 24 Frequency Response: 20-20KHz Sensitivity (S.P.L.): 973dB (at 1KHz Input Plug Diameter: 3.5mm and 3.5mm iPhone 1m DJ coiled cable extends easily to 2.5m 1.2m lightweight cable with mic for iPhone, Blackberry, Skype & MP 3.5mm - 6.3mm (1/4") adapter