Scientific calculator

This calculator has a highly efficient solar panel that only requires 50 lux, working with any available light. You will never need batteries again. 10 digits LCD + 2 digits of exponent. 15 levels of parenthesis. 7 functions including all preprogrammed operations of large display scientific calculator 830003 Plus; binary, octal decimal, sexagesimal, and hexadecimal conversion; and standard deviation.

Dimensions: 5¼" x 2¾" x 7/16" (133 x 70 x 11mm).
Weight: 2 oz (57g).