Sony MDR-EX100AP BLACK In-Ear Headsets for Smart Phones MDREX100 Clear sound, discreet style for your smartphone 3g in-ear headphones with inline remote, microphone, 9mm neodymium driver and 1.2m cord Features Crystal-clear audio with a 9mm driver unit - Hear all your songs in crisp, clear sound when you"re out and about Soaring vocals with less distortion - A 103dB/mW sensitivity and a wide frequency range of 5-24,000Hz help deliver accurate high and low notes whatever the volume Make or take a call with your Android smartphone - Chat to your friends over the phone, your voice will come across crisp and clear thanks to a built-in mic Less tangles, more flexibility - The 1.2 metre cord is designed to resist snags and tangles, keeping your headphones knot-free Hear resonant acoustics with a closed design - Tightly sealed earphones reflect your music back towards your ears for resounding audio Style on the move - The compact design allows for discreet, elegant headphones so you can look good anywhere Get the perfect fit - You get four sizes of soft silicone earbuds (SS, S, M and L) for maximum comfort Find the best length for you with a cord adjuster - Easily change the amount of excess cord you have so it doesn"t get in the way