Urbanears PLATTAN On-Ear Stereo Heaphones. Urbanears designed Plattan to be the perfect classic headphone, utilizing innovative functions and performance with today's technology. This full size headphone allows for rich, secluded sound. You can fold it down to the size of your fist for maximum mobility. Plattan also comes with a zound plug on the earcap, allowing for a friend to plug in and enjoy your music. Audio features include: 40 mm handmade drivers Frequency response 20 Hz - 20 kHz Impedance 60 Ohm Sensitivity 115 dB Max input power 40 mW 47 tangle resistant fabric cord Dimensions: 5.75 L x 2.90 W x 5.75 H; Weight: 0.75 lbs.