This handheld scientific calculator comes with a protective plastic cover that safeguards the keypad, particularly while traveling. The Sharp EL-738 has a two-line display (total 12 digits), which helps you see both the figures and result of the calculations at a glance. The keys are color-coded, making it easy for you to find common functions on this Sharp calculator. This scientific calculator includes a scroll back function, which allows you to edit calculations without re-entering data. Soft-touch keys and a clear display also make the Sharp EL-738 practical for long usage. This Sharp calculator uses common AAA batteries, making it easy to use, where ever you are.