Basic Pocket Blue, Grey Negation key 8 digits LCD Battery/Solar LR54 Handheld calculator with basic angled 8-digit LCD display and dual power. Design Keys quantity 25 keys Control type Buttons Cover No Housing material Plastic Product colour Blue, Grey Type Basic Form factor Pocket Performance Symbolic notation Square root Conversion between Percent Negation key Yes Display Backlight display No Display number of lines 1 lines Display tilting No Display type LCD Digits 8 digits Power Auto power off No Battery type LR54 Number of batteries supported 1 Power source Battery/Solar Weight & dimensions Weight 58 g Height 116 mm Depth 17 mm Width 71 mm Packaging data Package type Blister