The Candlepower Forums (TCPF) Evaluation Units - Firewolf FMA36 210 Lumen CREE LED Flashlight &ndash; 7in, 9.5oz 210 Lumen CREE 100,000 Hour Lifespan LED; Shockproof/Waterproof; Body and Reflector - 6061-T6 Aluminum HAIII Anodized Finish; Optical Glass Lens Bazel Dia. - 1.5in; Body Dia. - 1in; Length  7in; Weight w/batteries  9.5oz; All Firewolf Products are Serialized to aid in Asset Management Runs on High for 2+ Hours Then Automatically Changes to Low for an Additional 2+ Hours; Modes Include; High, Infinite Dimming and Strobe; Uses three RC123 Batteries  Not Included Internal Post and Pin Connectors Provide an Isolated Ground Path for Battery and Switch; No Exposed Springs In the Battery Compartment; Reverse Polarity & Short Circuit Protection Modes: Momentary Mode: Press Lightly on Switch; Constant Mode: Click Once; Strobe Mode: Rapidly Double-Click; Infinite Dimming: Press and Hold Switch to Select Desired Brightness