Super value lightweight stereo headphones with foam earpads and ideal for listening centres and computers. Cable length is 1.2m with a 3.5mm nickel plated jack plug. Available individually or packs.Technical Specification:Driver Unit: 2 x 27mm Ferrite MagnetImpedance: 32 Ohms +/- 10%Sensitivity: 115dB S.P.L. at 1kHz +/- 3db USD1.21 - black housing & spongeFrequency response: 20 - 20kHzMax. Input Power: 15mW