Here is manual Braille machine technical parameters: 1, character select: ju-character wheel Internal code breaks at the 2, total 67 Letters: a-z Decimal: 0-9, note added:, ¥, $, NO. ???:`?'?.?-?/?(?)?&?? Big numbers: 0-9 Symbols:-,-,/, (,) Modify the flat:, 3, character International credit card meets ISO standards standard special characters 4, interval 2 1/7 inches 1/10 (limited to small meet) 5, operation: manual Braille lines: 1-11 6, Braille position indicator: indicates that the PIN and card 7, size: 340X270X165mm (L*W*H)