This is a Streamlight Flashlight known as the Microstream, model 66318.
This small light fits in the palm of your hand" but doesn't compromise on power. Put this light in your pocket or clip it to the brim of your hat and have light wherever you go.
Features:
Uses one “AAA†batteries
Push-button tail switch
Durable, anodized aluminum construction, Unbreakable polycarbonate lens
