Size: 24.5 * 16 * 3cm Material: Metal plate Color: Gold Specifications: 12-bit calculator 1: Super screen and font to clearly observe the calculation results 2: High-penetrating acrylic plate protection display panel, protect the screen, not easy to draw 3: Battery + solar dual power drive, long-lasting, long working hours 4: With automatic power failure function, extend the machine life, save energy 5: High quality control panel, durable