Olight S2A Baton Cree XM-L2 LED 550 Lumens Flashlight With AA Battery With Skyben Holster (S2A +AA+Holster(Yellow)) LENS: PMMA TIR lens LIGHT SOURCE:Cree XM-L2 LED The S2A Baton has five brightness levels and a strobe mode, with an output ranging from 0.5 up to 550 lumens. Built-in timer: Short timer (3 minutes) or Long timer (9 minutes) BODY MATERIAL: 6061-T6 aluminum body with anti-scratch type-III hard anodized finish Skin safe silicone