Kisaragi Mystery of the crystal Seven of natural stone Earphone jack accessories Luxury Swarovski Crystal The top of the crystal has become the hook. and can also be used as a charm.For example, (fasteners in general, mobile straps, back charm, mobile games, wallet, put pen, digital camera case), and the like. Such as mobile phones. It is a commodity that can be attached to the earphone jack (diameter 3.5 mm).Regardless of manufacturer or series, earphone jack diameter is generally 3.5 mm.3.5mm0.1378inch. The following is Japan of the Amazon store.Made in Japan.Designed by Kisaragi. http://www.amazon.co.jp/gp/aag/main?ie=UTF8&asin=&isAmazonFulfilled=1&isCBA=&marketplaceID=A1VC38T7YXB528&orderID=&protocol=current&seller=A243IZHCXRV5V9&sshmPath=