TT Solar Charging 14 Digits Electronic Scientific Calculator, 22*15*3.5cm

The powers are battery and solar (one AA battery NOT included). The Solar design make the calculator can work in daytime or even in the dim light without battery.er: Button cell/solar battery

Apply For: It perfects for office, business, school, store, mall and home use. It supports touch typing by user such as bank stuff, financial worker, front Desk clerk and data analyst etc.