4.5 Inch overall. Impact resistant. Water resistant. Clip. Rechargeable. Lanyard. NiteLab UHi 20 MAX LED. OP reflector. Modes: LUMIN SHIELD floodlight (4000 lumens); Search spotlight (1700 lumens); High (1200 lumens, 2h 31m runtime); Mid (300 lumens, 6h 58m runtime); Low (70 lumens, 31h runtime); Ultralow (5 lumens, 63h runtime). 400m beam distance. Rapid Lock available for Half Lockout Mode and Full Lockout Mode. Power indicators. Advanced power cutoff. Advanced temperature regulation. Tail stand capability. Requires (1) Lithium battery (included). Aluminum construction. Color: Black. Boxed with hanging tab.