Shadow"s SH-1110-UK is a complete pickup system to amplify your acoustic ukulele. The Shadow SH-1110 consists of an undersaddle pickup (50 mm x 2,3 mm x 1,8 mm) which installs invisibly under the saddle and fits all standard slots and guarantees, with correct installation, a balanced volume of your ukulele"s strings. The pickup"s screwable, high-quality stereo-endpin connection (SH 012) has a 2.5 mm input jack for the pickup cable (length: 200 mm) and a 6.3 mm output jack for standard instrument cables. The SH 1110-UK does not require a battery. If you want to combine the SH 1110-UK with an external preamp, Shadow recommends the SH ACP-1. Shadow cable preamps will allow you to make your passive pickup active without a modification to your instrument.Complete pickup system Measurements: 50 mm x 2.3 mm x 1.8 mm Includes stereo endpin connection