Excellent value comfortable headphones fitted with a braided 1.8m cable and a 3.5mm nickel plated headphone jack for use with computers phones and listening centres. Also includes a comfortable and extra durable adjustable headband to help fit children's heads properly.Technical Specification:Driver Unit: 2 x 30mm Ferrite MagnetImpedance: 32 Ohms +/- 10%Sensitivity: 108dB S.P.L. at 1kHz +/- 3dbFrequency response: 20 - 20kHz