OLIGHT Olight-S20-XML2 Baton 550-Lumen LED Flashlight, Black Utilizing the newest Cree XM-L2 LED Max output: 550 lumens 2x CR123A or 1x 18650 batteries (not included) Utilizing the newest Cree XM-L2 LED Max Output: 550 Lumens High efficiency driver circuit 2 x CR123A or 1x 18650 batteries (NOT included) Material - Aluminum body with anti-scratching type III hard anodizing finish