Long Battery Life Calculator, Large LCD Screen Calculator, for Office School Specification: Condition:100% Item Type: CalculatorFeatures: 12 digits Large display Two power supply methods: solar energy/button battery [CR2025 capacity 50mah] Total abdication percentage Common automatic shutdown calculation function Size: Approx. 160 x 160 x 40mm/6.3 x 6.3 x 1.6in Power Battery: 1 x Button Battery included CR2025 capacity 50mah. Solar powered, no need to replace the battery Package List: 1 x Calculator 1 x Manual