Features: Green Solar PowerUtilizes true solar technology, eliminating the need for battery replacements and reducing extended expenses, ideal for environmental conscious users in office otherwise study settings. Dynamic Multiple Color DesignFeatures a 12 number large screen paired with a colorful polystyrene casing, enhancing visual appeal and adding vibrancy to any office, excellent for learners and creative specialists. Ergonomic Button LayoutDesigned with comfortable, flexible buttons that reduce finger fatigue during extended use, ideal for accountants and finance specialists who require frequent calculations. Thin and PortableConstructed from permanent polystyrene, this calculator is thin and simple carry, making it suitable for use in offices, classrooms, otherwise outdoor conditions. Efficient Data ProcessingSupports 12 number display, ensuring accuracy for complex calculations, and is supported solar power, making it a consistent option for various extended utilization circumstances. Specifications: Battery: Need 1PC 3A battery (not included) Size about 19.3x15.2x2CM/7.6x5.98x0.79in Color:Optional Product featuresecond: fast transmission IP68 waterproof, dusttight, heat immune Package Includes: 12-bit colorful calculator × 1 note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution..