KOSS 185000 Pathfinder Noise-Isolating Earbuds

Dynamic element positioned just outside the ear; Soft foam cushion expands for a custom fit to improve isolation & enhance deep bass & treble clarity; Fit enhances isolation to plug out ambient sounds that interfere with listening experience ; Freq resp: 10Hz-20kHz ; Imp: 16ohm ; Sensitivity: 112dB/mW; 4ft white cord; Limited lifetime warranty;