the Mag Instrument S3D016 Black Heavy Duty 3 D-Cell Flashlight be another of my past favorite that get a lot of use . now a day , there be a lot go on with the technology of flashlight . LED , Lithium battery , focus bezel , etc. . the maglight brand have fall behind a bit technologically , but be still a great flashlight for minor emergency not involve look for criminal , terrorist or signalling for a chopper pick up . the Mag Instrument S3D016 Black Heavy Duty 3 D-Cell Flashlight be perfect for a tool box but a bit too big for a deep pocket . the product be very durable and they be prove reliable . do not get I wrong . I have depend on mag lite of all size for year . but head to head , the surefire brand have quickly surpass mag lite in every important aspect of flashlight - usable light power , size , durability and weight . the mag light brand just be not keep up with the new technology . and that be too bad for we who value product loyalty . the Mag Instrument S3D016 Black Heavy Duty 3 D-Cell Flashlight be still a good value and I have several in the house and the vehicle . but they be be replace by surefire as they wear out . John Row