KEF M200 Hi-Fi In-Ear Headphones - Aluminum/Black Combining a 10mm LF driver and a 5.5mm neodymium MF/HF driver, KEF's unique Dual Dynamic Driver (DDD) array creates an engagingly natural sound right across the frequency range. Secure Arm folds work together with an ergonomic shell and soft silicone tips that fit snugly over the ear canal to form a tight acoustic seal that eliminates external noise, they feel so natural that you soon forget you're wearing them. M200 has an in-line microphone and remote control for iPhone and other Apple products, allowing you to operate the play functions or switch between calls and music. In the box: M200 earphones, high performance audio cable with 3-button remote/mic for use with Apple products, protective case, flight adaptor, 3 pairs of replacement silicon ear tips