Fenix TK21 XM-L Led FlashlightTK21: FENIX TK21 XM-L Led - 449 lumens. Fenix TK21, adopting the latest American Cree XM-L LED, TK21 is the first high intensity and compact outdoor flashlight using XM LED with the side mode switch button. Fenix TK series flashlights feature a powerful, tough and waterproof to IPX-8 Standard design, which is suitable for various outdoor environments, such as hunting and searching. Powered by two CR123A batteries (Lithium) or one 18650 rechargeable battery (Li-ion), with multiple brightness levels, the light makes a perfect combination of the extremely high intensity and the ultra long runtime. Therefore, TK21 must be your reliable partner when hunting, searching, rescuing, etc.