AKG K271 MKII-Y3 Closed-type headphones, Hibino 3-year warranty model

Structure Sealed Sensitivity (1kHz) 91dBSPL/mW Playback frequency band 16Hz to 28kHz Maximum allowable input 200mW Impedance 55Ω ear pads around the ears, detachable, made of synthetic leather Input connector 3.5mm stereo mini plug (gold plated) Cable detachable, Weight 240g (excluding cable) Accessories Headphone cable: 3m straight, OFC (EK300)/5m curled cord, OFC (EK500S)