Help light the way to a cure. For every "Pink Nano Light" sold, Streamlight will donate $1 to the Breast Cancer Research Foundation®. The 10-lumen beam works great for lighting the way to your house or car. Tiny light adds minimal bulk when carried in your pocket. Snap hook for attaching to your key ring. Rotating head on/off switch. Pink model comes with a double-sided key fob with the breast cancer ribbon on one side and the Streamlight logo on the other. Uses four IEC-LR41 coin-cell batteries (included) for eight hours of operation. Length: 1.5". Weight: 0.4 oz. Colors: Pink, Black.