The Inova Microlight brings lighting sophistication to the under-engineered micro flashlight area. From its tough polycarbonate construction to its multi-function switch mechanism to its protected recessed LED lamp, the Microlight offers advanced engineering in a key holder-size lighting powerhouse with an up to 50 foot effective range and up to one-mile signal visibility. It runs on two 2016 lithium coin cell batteries which provide up to 15 hours of light. Four lighting functions, a water- and crush-resistant body and a stainless-steel universal quick release clip make it ideal to affix to items from children's backpacks to military gear.