Model - ML80013. Two C-Cell. 9 1/4" overall. Black aluminum housing. Up to 137 lumen output. Visible over 307m on high setting. Can be personalized for quick access to your preferred functions: full power, power save, strobe, SOS or Momentary On/Off. Uses two C-Cell batteries (not included). Runtime per battery set: 13 hours on high setting, 48 hours on low setting.