4.5 Inch overall. Strobe. Water resistant. Impact resistant. Clip. Rechargeable. Cool white and warm white LEDs. Modes: Level 1 CW (2500-800 lumens, 1+240m runtime); WW (2000-660 lumens, 1+240m runtime); Level 2 CW (800-120 lumens, 243+80m runtime); WW (660-100 lumens, 243+80m runtime); Level 3 CW (120 lumens, 23h runtime); WW (100 lumens, 23h runtime); Level 4 CW (15 lumens, 180h runtime); WW (12 lumens, 180h runtime); Level 5 CW (1 lumen, 60 day runtime); WW (1 lumen, 60 day runtime). 145m beam distance. MCC3 charging cable. TIR optic lens. Side switch operation. Requires (1) 21700 battery (included). Aluminum construction. Color: Purple. Boxed.