The Canon WS-1400H calculator has a wide range of features, which help solve your calculation problems quickly. With a 14-digit capacity, large calculations such as currency exchanges can be easily accommodated.In addition, the WS-1400H has a convenient key roll-over system for quick entry. The large, durable plastic key tops with double-zero and triple-zero keys ensure accurate operation. Add to this the dual power capability - both solar and battery - and youll see why the choice is clearly Canon.