Streamlight Inc.'s Blue Nano Light key-chain commemorates Concerns for Police Survivors (C.O.P.S.), Inc., a national organization that supports surviving family and co-workers of fallen officers. Streamlight will donate $1 to C.O.P.S. for each Blue Nano Light sold. The tiny keychain light measures 1.47 inches in length, but boasts a white LED that delivers 10 lumens and features a 100,000 hour lifetime. Fabricated from machined aircraft aluminum, the light runs up to eight hours, powered by four IEC-LR41 coin cell batteries. It features a rotating on/off head switch. The Blue Nano Light has a non-rotating snap hook for easy one-handed operation and a double-sided FOB that features the C.O.P.S. logo on one side and the Streamlight logo on the other side.