Portable 12 Digital Solar Calculator Business Accounting Electronic Calculator Desktop Stationery Office Supplies Features: 12-bit display, solar supply or battery-powered, easy to use. Compact and easy to carry. Specifications: Material: Plastic Power supply: Solar energy or 1pcs AA battery(battery is not included) Size: 14 X 12 cm/5.51 X 4.72 in Tips: This product of the solar function, light conditions can be used directly boot (can also be battery-powered). Included: 1 X Calculator