The Galaxy Pathmarker is Constructed from Anodized Aerospace Aluminum in Matte Black; Shatterproof, Scratch-Resistant, Tempered Glass Lens with Anti-Reflective Coating; Shot Blasted Reflector; Double "O" Ring Sealed for Waterproofing and Extreme Weather and Corrosion Resistance Features * Easily Accessible, Recessed Click On/Off Tailcap Switch to Prevent Accidental Illumination * Operable with One Hand * Ergonomic, Machined Rings on Casing Provide for Secure Grip AND Optimize Heat Dissipation * DC/DC Regulator for Optimized Output and Runtime * Compatible with 2AA Rechargeable Ni-CAD Batteries * Safely Illuminates Paths, Keylocks, Maps, Charts, etc. * Compact Size: Pockets, Purses, Backpacks, Glove Compartments, etc. * Maintenance-Free CREE LED Never Needs Replacing * Impact Resistant * Limited Lifetime Warranty * Includes: 2 Energizer AA Batteries, Wrist Lanyard