The ear-bud headphones for audio enthusiasts - from Denon. The AH-C700 offer a machined aluminum housing and plug designed to reproduce unprecedented sound dynamics. They also feature Denon's exclusive Acoustic Opimizer which adjusts sound pressure balance in front and behind diaphragm to deliver dynamic bass sounds. Denon's new earbud headphones are the ideal solution for consumers who want to enjoy the flexibility and convenience of super lightweight on-the-go listening, without any sacrifice in audio quality. Ideal for use in commuting via airplane, automobile or subway, AH-C700 (available in black or silver) will faithfully reproduce original sound for discriminating listeners. The comfortable canal-type design that fits snuggly into a listener's ears. Three different sized ear pads are included for a more custom fit.