I have a Coleman 5339 series flashlight/lantern, was wondering where batteries were located?

This is a green metallic flashlight with rubber handle, not AAA or even AA version, this one has a feature if you extend the base, the bulb that powers the flashlight head becomes visible in the plastic tubing that extends the flashlight and this becomes the lantern feature. It is a pretty cool flashlight. The diameter of the head is 3 inches, it stands about 7 inches in flashlight mode and 8 1/2 in lantern mode. If anybody can tell me how to get to the batteries so I can change them, be much appreciative, as this is a quality flashlight and I don't have the manual or anything.