Color: Sliver and blackMaterial:Metal ,plasticSize:Diameter of cable into the hole 6.35mmcable length 78cmpickup diameter:3cmInstallation is simple,no need to install, use immediatelyPursue to reduce guitar acousticA good partner in the showtimeInstallation Notes:Open the package, tear double-sided tape ,put the microphone pickup to the panelOne side access the pickup, the other side directly inserted instrument speakersFit for:Guitar, ukulele, etc.Package Contents:1x Universal TransducerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.