This Fiber Optic Pocket Fault Locator is designed to be rugged, compact and lightweight. The unit is 7.1″ in length and weighs only 4.5oz. The Fiber Optic Pocket Fault Locator has a 30-hour battery life in continuous mode and 40 hours in modulated mode. The bright 650nm laser in this Pocket Fault Locator ensures fast and easy location of fault points in fiber optic patchcords, patchpanels and enclosures. The light can reach up to 7km on Singlemode and 5km on Multimode fibers. The Fiber Optic Pocket Fault Locator can also be used to identify fibers in multi-fiber cables. The Fiber Optic Pocket Fault Locator is designed for both singlemode and multimode fiber optic applications. These units are shipped with two “AA” batteries and a belt holster.