For instance, the keyboard layout is different, with two separate shift keys, and the available numbered-storage registers is reduced from 15 to 10.

Early production runs were of poor quality; newer calculators have apparently solved this shortcoming.

The first in 2001, branded as "10BII", had a golden bezel and mauve statistical shift button and key labels.

The second in 2007, branded as "10bII", had a silver bezel and blue statistical shift button and key labels.

[10] The part number and physical appearance of model 2 didn't change except for a "Rev 2" plate on the bottom side.