The USB-558XL Rechargeable Tactical Flashlight is multi-functional, cycling between high, medium and low modes with an optional strobe when you press twice in succession. It uses a CREE LED rated at 900 lumens on high for 2 hours but can be extended up to 16.75 hours in low mode (100 lumens). The USB-558XL is rated IP-X7 waterproof, chemical, heat and impact resistant and features a discretely sleeved collar that opens for direct USB charging. The built-in charging indicator turns from red to green when fully charged. The flashlight can also run on 2 CR123 batteries for back up power. The flashlight is serialized for personal identification. Comes with a 2' USB charging cable, lithium-ion rechargeable battery and CR123 battery carrier (batteries not included).