Description : TEXTI1706SV Well equipped with SuperView display and solar/battery power for use anywhere. 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. Square root key is useful for schoolwork. Calculator Type: Basic; Global Product Type: Calculators; Calculator Style: N/A; Power Source(s): Battery; Solar.