Noise-isolating in-ear stereo earbuds; Soft memory-foam earpads create the perfect custom fit & enhance bass & treble clarity; Frequency response performance delivers the full Koss(R) high-fidelity sound; Freq resp: 10Hz-20kHz; Imp: 16ohm ; Sensitivity: 112dB SPL; 4ft cord with 3.5mm plug; White;