Flashback LED Light BatonUses two D batteries (not included) Textured grip and wrist strap Three stage switch The Flashback LED Light Baton is the most visible flashing signal light available. The 25 highly luminous LED bulbs can be seen for up to 3 4 of a mile and flash approximately 150 times per minute. Flashback provides a minimum of 72 hours of continuous flashing operation on 2 D batteries (not included). The three stage switch provides off, flashing or steady light.