- Light source LED - 1x 5mm - Type compact flashlight - Switch Reverse clicky - Operation dual-mode - Operational sequence off momentary-on | on - Driver Voltage boost circuit - Power source Alkaline: 1x AA - Rechargables OK - Lithiums (1.7V) may overdrive LED - Focus fixed - Beam narrow spot - Construction Anodized aluminum - Environmental Water resistance: Waterproof (not for diving)