Headphones Sony MDR-EX650APT: Clean and Stable Sound Enjoy clear audio experience with the high-quality in-ear MDR-EX650APT headphone  from Sony. The MDR-EX650APT offers  a great frequency range and exceptional  Sensitivity at 107 db/mW which ensures the reproduction of bass and treble tones accurately at any volume. The new curved design  is great to keep in your ear and you will not even notice that you are wearing a headset. Their faithful sound reproduction will satisfy even the most demanding user.  Minimal distortion thanks to the brass housing, that reduces unwanted resonance for a richer performance.  The headphones are equipped with  12mm neodymium speakers.  The sound is rendered in a frequency range from  5Hz  to  28kHz.  Excellent stability   In the search for higher stability and clearer treble, expanded brass ducts have been used with a 15% larger inner diameter than those found in conventional headphones. Beat Response Control Utilises sculpted air vents to optimise low frequencies and accurately reproduce deep bass rhythms and beats.Great for Travelling   Made of hard silicone for durability and a softer silicone on the outside for comfort. Stays secure in your ear with four sizes of bud. Around 9g and with a supplied carry case, these headphones are great on the go. Stay knot-free with a serrated cord sporting a slider for easily adjusting cord length. And keep in touch with hands-free calls using the inline remote.