Sony MDR-210LP Open-air Lightweight Headphones w/Unimatch plug Lightweight on-the-ear design UniMatch plug adapter for mini or full-size headphone jacks Single-sided cord, Cable Length - 1.3 m Weight: 2.6 oz. (without cord) 100Mw, Open ear cups,sony Acoustic Twin Turbo Circuitry Freq Resp: 18 Hz-22 Khz Freq Resp: 18 Hz-22 Khz,Sony Acoustic Twin Turbo Circuitry Lightweight Sony Acoustic Twin Turbo Circuitry