CREE LED technology - 50,000 + hours LED life Momentary or constant-on flashlight Sharp focused beam Aircraft-grade 6061-T6 aluminum housing with Type III hard anodized finish IP-X7 Waterproof Chemical, heat and impact resistant Meets the requirements for NFPA-1971-8.6 (2013) USB cord with rechargeable lithium-ion battery (included) Can also run on 2 CR123 batteries (not included) Serialized for personal identification The USB-558XL USB Rechargeable Tactical Flashlight 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 at 100 lumens. At only 5.9&';&'; long, and weighing only 5.7 oz, this metal tactical flashlight is multi-functional, cycling between high, medium, and low modes with an optional strobe when you press twice in succession. The USB-558XL is rated IP-X7 waterproof 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. Included is a 2 foot USB charging cable, lithium-ion rechargeable battery and CR123 battery carrier (batteries not included) for added convenience.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }