Sharp® QS-2130 Compact Desktop Calculator, 12-Digit LCD

Versatile twin-powered calculator with adding machine logic. Solar powered with battery backup prevents memory loss and keeps calculator running in all lighting conditions. Easy-to-read display with automatic three-digit punctuation. Auto power off after seven minutes. Power Source(s): Battery; Solar; Display Notation: Numeric; Number of Display Digits: 12; Memory: 4-Key/Secondary 2-Key.