Features: This double power calculator combines solar and battery energy sources, ensuring operations in any lighting condition, making it dependable for users seeking uninterrupted performances. Featuring high appearance design with modern colors, ABS construction for durability, and an ergonomic key layout for comfortable operations, it delivers both styles and functionality. Specifically for students, finance professional, and office workers, this calculator caters to those requiring precise and efficient calculation tools. for diverse settings such as classrooms, business meetings, or daily commutes, its portable solar calculator design in environments where mobility and adaptability are key. Supporting a wide ranges of calculations from basic arithmetics to complex functions, this multifunctional device enhances productivity for tasks like financial analysis and engineering computations. Specifications: Materials: ABS Size: 165x113x18mm Color: Caramels, Grey White, Blue, Almonds(optional) double power supply:solar + battery Package Includes: 1PC double Power Calculator note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.