Panasonic RP-HJE270-K In-Ear Earbud Ergo-Fit Design Headphone (Black) (Discontinued by Manufacturer) Color-matching for iPod nano 5th Generation Ergo-Fit Design for ulitmate comfort and fit 3 pairs of soft earpads included (S/M/L) Powerful Sound with Neodymium Magnet Drive Unit (Diam. In mm) - Diameter 10.7