Shed a little light in convenient places... Use on a keychain, zipper, in a purse, remove the clip and use as an area light...it's only limited by your creativity! Features: Bright L.E.D. - Flash or Glow - Push-button switch Water Resistant Long life replaceable batteries - Included - replaceable, 2 x 3 volt lithium battery included (DL2016B) Battery Run Time: Glow mode (20 hours), Flash mode (25 hours)