30 inch length (76cm) ONLY USE ON 12V SYSTEMS. Sheathing to protect the tester;Lights up white when current is detected. & compact metal body. Modern day machines use lots of electrical components, and sometimes things go wrong while on the trail. The Mini Test Light is the go-to tool to help troubleshoot those electrical while either on the trail or in the shop. Made with a metal body and compact size, it's a must have addition to any trail tool kit or tool box.