Why does the 200lx need a 12V supply?

[Harald]

I was wondering why the 200lx needs a 12V supply. It seems a little odd as it runs of 2AA cells.
When you drop the input voltage the current doesn't change (it draws about 45mA), it simply switches over to battery power at about 9V. So it doesn't look like the 12V are going to a dc/dc converter.
Also, in off state it draws 13mA which seems a little high.

From the battery it draws 60 to 70mA when running and almost nothing when turned off.

Does anybody have schematics of the 200lx, especially the (internal) power supply circuit?

Regards,
Harald