The FIS Fiber Optic Pocket Fault Locators are designed to be rugged, compact, and lightweight. These units are 7.1" in length and weigh approximately 4.5oz. With a 30-hour battery life in continuous mode and 40 hours in modulated mode, the bright 650nm (red) laser which has a range of up to 5Km ensures the fast and easy location of fault points within fiber optic patchcords, patch panels, and enclosures. They can also be used to identify fibers in multi-fiber cables, and it is designed for both singlemode and multimode fiber optic applications. These units are shipped with two "AA" batteries and a belt holster.