IZTOSS Motorbike Motorcycle Helmet Headset Stereo Speakers Earphone for MP3 MP4 GPS have a on/off button and volume dial controller as well as an extra long section of cable which connects via the jack should you need more length. The helmet speakers have a standard 2.5mm jack and will work with any MP3, GPS or music device that has this size input Total cable length: 186cm (73") Speaker dimensions (diameter x width): 60 x 10mm (2.3 x 0.4")