Urbanears MEDIS Stereo Earbud with EarClick Technology. The Urbanears Medis Stereo Earbud is an unprecedented experience in ergonomics and functionality. The patented EarClick solution secures the earpiece at two separate points rather than one, relieving pressure to a nearly non-existent level while keeping it firmly in place. Additionally, the Medis rests a small distance from your ear canal and therefore doesn"t affect your balance. Naturally, the Medis features a dynamic sound and the sleek and minimal design that is synonymous with Urbanears. Audio features include: 15.4 mm handmade drivers Frequency response 20 Hz - 20 kHz Impedance 32 Ohm Sensitivity 115 dB Max input power 5 mW 47" tangle resistant fabric cord Dimensions: 5.75" L x 1.50" W x 5.75" H; Weight: 0.5 lbs.