4.65" overall. Rechargeable. SOS strobe. Water resistant. Impact resistant. CREE XPL LED. Modes: High (1045 lumens, 3h 50m runtime), Low (85 lumens, 24h 50m runtime). 335m beam distance. Features memory retention. USB to micro USB charging cable included. Digital on/off mode switch. Dual function spring pocket clip allows for clipping to pocket, hat, or belt. Requires (1) 18650 battery (included). Aluminum construction. Color: Black. Clam packed.