4.35 overall. Rechargeable. Impact resistant. Water resistant. Lanyard. Modes: High (1000 lumens, 2.5h runtime), Med (300 lumens, 4.25h runtime), Low (15 lumens, 60h runtime). IntelliBeam technology automatically and seamlessly adjusts light output from 15 to 1000 lumens depending on environmental conditions. Five pre-programmed profiles. 227m beam distance. 12mm MaxVision Beam reflector. Charges small devices at 5 volts. USB charging cord. Requires (1) Lithium battery (included). Aluminum construction. Color: Black. Boxed.