why isnt a 32 Keys keyboard really 37 keys?

i have seen alot of synths and keyboards with only 32 keys, not 37.. it is like you are getting 2 and a half Octave...

any special reasons for this???

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Edited: sorry I thought viceversa

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http://www.supuer-music.com

My Edirol PCR-30 has 32 keys. It goes from F3 to C6 but I've got no idea why. I'm not complaining though, if it was a full 3 octaves, it wouldn't fit on my desk in front of me. =)

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