Does an MPC Keys 37 fit in a carry on suitcase?

Just wondering, im thinking of buying one while im on vacation, and would need some way of taking it back with me.

It depends on the airline's baggage allowance, this varies a fair bit between carriers. If it's out of it's box then you might get away with it

For example, Easyjet priority bags are 56cm x 45cm, while the Key 37 is 58cm long (maybe add another 10cm for the box?). Or just check it into the hold and just pay the extra $50 or so.