In-ear stereo headphones; For all portable stereos, boom boxes, MP3 players & CD players; Memory headband; Lightweight design for extended use; Soft silicone eartips for comfort fit; Freq resp: 20Hz-20kHz; Sensitivity: 98dB/mW; Imp: 32ohm ; Nickel-plated, 3.5mm connector; Soft-touch rubber cord; Lifetime warranty;