Description taken directly from Play.com:
* Winner of What Hi-Fi's Best IN-EAR Headphones of the YEAR award 2007
* Speaker Type: Balanced MicroSpeaker
* Sensitivity (1mW): 113 dB SPL/mW
* Impedance (1kHz): 27
* Frequency Range: 22Hz - 17.5kHz
* Cable Length/with Extension: 18 in. / 45cm (54 in. / 136cm)
A stonking price for these great earphones. Beats the previous £24.99 deal for the exact same headphones but no voucher required this time. I believe you can get quidco on this item as well.