Truly tiny, Streamlight's Nanolight is a weatherproof, personal flashlight featuring a 100,000 hour life LED. Includes a non-rotating snap hook for easy one handed operation when attached to a keychain. Easily attaches/detaches to just about anything with convenient pocket clip or key ring. Up to 8 hrs. run time. Machined aircraft-grade aluminum with anodized finish. Powered by 4 alkaline button cells (included). 100,000 hr. lifetime high-intensity LED. LED available in white (10 lumens). Thank for looking - eCop! Police Supply. MFG MPN: 73001 UPC: 080926730014 MPN: STL73001