The enhanced definition audio of the iP-XS5 gives you a new level of treble and midrange clarity, while maintaining a deep, solid bass response. The proprietary ear tip design offers you better fit, comfort, and rejection from outside noise. The high-definition condenser mic is conveniently located at mouth level to ensure call quality and the ergonomically placed soft-touch button makes it easy to control your music or phone calls. Durable OFC (oxygen-free copper) cables resist tangling, the 3.5mm and 2.5mm adapters provide optimal compatibility, and a host of accessories ensures great sound on the go. Works with iPhone, BlackBerry, Samsung, Motorola, HTC, Sony, LG, and other devices with 3.5mm or 2.5mm connection. Features: Lightweight alloy metal headset with enhanced definition audio for iPhone 4/3G/S, BlackBerry, and any smartphone with 3.5mm or 2.5mm jack. Proprietary ear tip design provides optimal noise isolation and extended comfort. High-quality OFC cables, high-definition condenser mic, and soft-touch button for call and music control. Includes carrying case, 3.5mm and 2.5mm plug adapters, four sizes of ear tips, two foot extension cable, lanyard and shirt clip. Two year warranty. Specs: Earphone drivers: 9mm neodymium. Frequency response: 12Hz-22KHz. Sensitivity (1KHz, 0.1V): >100dB. Maximum SPL output: >120dB. Microphone sensitivity: 44dB +/-3 dB@1KHz. Microphone frequency response: 20Hz-16KHz. Microphone impedance: 2.2K ohm.