Well equipped with SuperView display and solar/battery power for use anywhere</br>Color-coded keyboard with extra-large?? easy-to-use keys. Protective slide case stores on back until needed. Change sign (+/-) key simplifies entry of negative numbers</br>Square root key is useful for schoolwork. Power Source(s): Battery; Solar; Display Notation: Numeric; Number of Display Digits: 8; Display Characters x Display Lines: N/A.</br>8-Digit Display; Batteries; Calculator; Calculators; Case; Dual Power; Handheld; Non-Printing; Pocket; Portable; Solar; TEXAS INSTRUMENTS; TI-1706SV; Mathematics; Science; Accounting; Calculation; Bookkeeping; Schools; Education</br></br>Product Description</br></br>Texas InstrumentsTI-1706SV Handheld Pocket Calculator?? 8-Digit LCD</br><br/>http://www.amazon.com/gp/product/B0006ZVJHC