Brand: FEREI Model: M501 Color: Silver Casing: Hard anodized finish Emitter Brand/Type: Cree Emitter BIN: Q5 Color BIN: White Total Emitters: 1 Battery Configurations: 1 x AA battery (included) Voltage Input: 3.7V Switch Type: Clicky/Clickie Glow-in-the-Dark/GITD Switch Location: Tail-cap Modes: 3 Mode Memory: No Mode Arrangement: Hi > Mid > SOS Brightness: 155 lumens maximum brightness (manufacturer rated) Runtime: 30 minutes (manufacturer rated) Lens: Coated Glass Lens Reflector: Aluminum Textured/OP Carrying Strap: Strap Included Other Features: Waterproof Design