Urbanears - Kransen is a premium in-ear model engineered with a hefty dose of Urbanears DNA. Minimal, yet packed with features, Kransen is ergonomically designed to stay anchored in your ear even when you move around. It"s built to deliver pre- cise and powerful bass tones and is finely tuned across a wide bandwidth, so you can hear more of your music. Kransen also features SnapConstruction and the CableLoop, which allows you to wrap up your cord when you"re not using your headphones. Because neat is nice. Compatible with any music players using 3.5 mm standardCompatible with unprotected 3.5 mm standard such as iPhone, Blackberry, HTC and more Technical Specifications:10 mm dynamic driversFrequency Response 20Hz-20kHzImpedance 16ohmSensitivity 100dBMax Input Power 100mW