Urbanears Kransen In-Ear Headphone, Rowan (4090862) The Urbanears patent-pending Cable Loop allows you to wrap your cord and secure it into place. You'll never again have to spend another minute untangling your headphones after they've been in your bag. Nice, huh? Inspired by the building blocks we played with as children, the Snap Construction feature lets you connect your ear buds around your neck. Most music devices today are also cell phones. That's why all our headphones come with a built-in microphone and remote. Use it to pick up calls, or fast forward, or rewind your music. Audio: 10 mm dynamic drivers. Frequency response: 20Hz-20kHz. Impedance: 16Ohm. Sensitivity: 100mVat1kHz, 100dB SPL. Connectivity technology : Wired