2.88'' overall. Water resistant. Impact resistant. Clip. Rechargeable. Strobe. White, red, blue, and UV LEDs. 78m beam distance. Modes: High-White (300 lumens, 1h runtime); Medium (50 lumens, 1h 30m runtime); Low (10 lumens, 9h 15m runtime). Requires (1) Lithium battery (included). Aluminum and PC construction. Boxed with hanging tab.