3.75" overall. Water resistant. Impact resistant. Rechargeable. Lanyard. Modes: High (400 lumens, 1h 55m runtime); Medium (150 lumens, 5h runtime); Low (35 lumens, 10h runtime). 110m beam distance. USB-C charging cable. Quick-Cycle switch system. Pure beam focus. One-handed slide focus. Requires (1) Lithium battery (included), or (1) CR123A battery (not included). Aluminum construction. Color: Black. Boxed with hanging tab.