Size: A keyboard piano’s size is directly related to how many keys it has. A full keyboard includes 88 keys, and the piano itself will be larger as a result of fitting all of the keys.

The LUMI is much smaller than a standard keyboard: a LUMI has 24 keys in total, compared with a standard piano’s 88. On a key-vs-key basis, it’s ⅞ the width of a standard piano’s keys.

I managed to score a real upright piano on Freecycle some time later and the difference between the Casio and a real weighted keyboard is night and day.<br><br>The Casio feels like a toy in ...