ASP Tactical Triad (Led Baton Light) Tested for durability 3 1/8" overall. 6061-T6 aircraft aluminum body with satin black hard coat finish. O-ring sealed for water resistance. Foam vinyl grip. Uses one CR123 lithium battery for 1 hour of runtime Made using the highest quality materials Cree High Intensity LED Two Position Rotary Switch Foamed Vinyl Grip Attaches to any ASP Baton 170 Lumens, 1 hour Runtime