The Sony MDR-EX450 In-ear Headphones with Aluminium Housing and Mic - Black are ideal for those who live life on the move as they combine an ultra-light aluminium design with a neodymium driver for high precision sound. You can listen to every note with perfect clarity from a compact, highly sensitive driver unit, and hear deep lows and soaring highs with an extended range of sound. With high sensitivity, these headphones allow you to push volume higher without sacrificing clarity. You can download the free Sony SmartKey app and configure music functions for your Android smartphone or iPhone. Play, pause, skip tracks, and change volume, all from your headphones, and control your calls Features Hybrid silicone earbuds with four sizes of hybrid soft silicone earbuds Light, rigid aluminium housing keeps sound stable for a richer, more dynamic performance - Just 6g Small but powerful driver has the same size speaker dome as a 16mm driver for high sensitivity and low distortion. Designed to fit snugly in your ears for hours of comfortable listening. Angled profile - With its small size, the driver sits neatly at the back of the ear for an extra comfortable fit and improved sound isolation. Supplied carry case Knot-free with a serrated cord sporting a slider for easily adjusting cord length. Inline remote. Specifications Aluminium housing minimises unwanted vibration 12mm neodymium drivers for dynamic sound Comfortable, secure-fitting silicone earbuds 5-25,000Hz frequency range Smartphone-compatible with in-line remote mic