Note: Item is a Wired in-the-ear headphone without microphone/ button to control volume,Powerful, bass-driven stereo sound,Good attenuation of ambient noise,Innovative finger-contoured housing design enables for easy adjustment and optimal wearing comfort,Optimised for mp3, iPod, iPhone, CD players and portable gaming systems,Frequency response (Headphones) - 20 Hz - 20,000 Hz,Sound pressure level (SPL) - 110dB (1kHz/1Vrms)