The larger dimensions are for the FR-2, not the FR-2LE.
Even so, the FR-2LE is not a small recorder. It's about
the size of a Sound Devices 722.
I think it's amusing that people say the FR-2LE is too big,
but don't think twice about attaching an external battery
and external preamp to a smaller recorder.
No, nobody will mistake a FR-2LE for a cell phone, and
you'll look funny with one stuffed down your pants. But
a larger recorder offers stronger construction, controls that
are easy to use with adult-size fingers, meters you can
actually see, built-in XLR jacks that can take some abuse
without breaking, and enough battery to run for hours while
providing 48V phantom power.
Flintstone