Bushnell T600L Rubicon 6AA Flashlight 687 lumens of power Cree Leeds for ease of use Advanced tar Optic with collimated beam Technology 687 lumens (on Hi); energy efficient Cree LEDs Red Halo low-lumen mode designed to enhance sight without compromising natural night vision 7.5-hour/69-hour/33-hour/61-hour run time (depending on setting); 224 m beam distance (on Hi) Locking collar prevents unintentional battery use; low setting reduces brightness to offer longer run times Requires 6 AA Batteries