Natural, high-fidelity audioG€"wherever the sound takes you. High-definition 40mm neodymium magnet speaker drivers Acoustic semi-open back design for spacious sound Speakers are tilted to ear s natural angle for optimal clarity Memory-foam pads adapt to your ear shape Aluminum ear shells reduce resonance Oxygen-free, fabric-lined cable ensures high-quality signal Frequency-response range of 12,000 - 25,000Hz. Portable and LightweightG€" measures 8 h x 6.8 w x 3.1 d, weighs .6 lbs. Includes Headphones, Apple-compatible in-line remote and microphone, 6.3-millimeter adapter plug, and storage pouch. Engineered for true-to-life-audio. The Fidelio L1 headphones have a semi-open back for the perfect combination of noise isolation and sonic transparence. Inside, carefully tuned, vented 40mm neodymium speaker drivers ensure balanced, natural sound. For even greater clarity, speakers are tilted to the ear's natural angle to direct sound straight into the ear canal. Listen more comfortably with memory-foam ear pads. The Fidelio L1 headphones come equipped with memory-foam ear pads that adapt to the shape of your ear to seal in bass sounds and keep out ambient noise. As a result, you can achieve a comfortable, ergonomic fit and wear the headphones for long periods of time. Includes convenient In-Line remote. With the Apple-compatible* in-line remote and microphone, you can switch tracks, adjust volume, and take calls without taking off your headphones or taking your mobile device out of your pocket. The oxygen-free, fabric-lined cable ensures a high-quality signal, while the included 6.3-millimeter adapter plug lets you use the headphones with a greater range of devices. The included storage pouch holds the headphones and their accessories. Enjoy natural, high-fidelity sound wherever you go with the Philips Fidelio L1 Over Ear Headphones. Order yours from Brookstone today. The Philips Fidelio L1 Headphones are backed by a one-year limited warranty. * These headphones are compatible with the iPhone (3GS and 4), iPod classic (120GB and 160GB), iPod nano (4th, 5th, and 6th generations), iPod touch (2nd, 3rd, and 4th generations), iPod shuffle (3rd and 4th generations), the iPad, and the iPad 2.