Specification Binding : Electronics Brand : NAGOYA Label : NAN AN QIXING ELECTRONIC CO.,LTD Manufacturer : NAN AN QIXING ELECTRONIC CO.,LTD Model : 2.5MM-617-1N+M PackageDimensions_Weight : 0.09920801790 PackageDimensions : L:5.49999999439 X W:2.99999999694 X H:2.99999999694 PartNumber : 2.5MM-617-1N+M ProductGroup : GPS or Navigation System ProductTypeName : GPS_OR_NAVIGATION_ACCESSORY Publisher : NAN AN QIXING ELECTRONIC CO.,LTD SmallImage_Height : 75 SmallImage_URL : http://ecx.images-amazon.com/images/I/41p8l4JSlNL._SL75_.jpg SmallImage_Width : 75 Studio : NAN AN QIXING ELECTRONIC CO.,LTD Title : 2.5mm Surveillance Listen Only Earpiece, Covert Acoustic Coil Tube Headset for Walkie Talkies, Ham Transceiver,Radio Speaker Mic Jacks. Weight : 0.1 WeightUnit : pounds