Easy to press buttons: The buttons of this standard function calculator are clearly separated, and will not let you press the wrong button to produce the wrong number; in addition, the tool is smart and fast response, which can improve your work efficiencyand provide daily Learning brings convenience. Clear reading: The portable desktop calculator is equipped with 12 digits and a large LCD display, which can clearly display the numbers or calculation results for you to read; the calculator is mainly made of plastic materials, durable and reliable,and can be used for a long time Dual power supply design: This portable electric digital desktop calculator is battery-powered and solar-powered, which means that the tool can be used under natural or artificial light. When it dims, the calculator will be battery-powered, and it supportsdaily continuous use. Use occasions: These battery-solar dual-power calculators are equipped with standard functions, which can help you solve basic calculation requirements and solve some numerical calculation problems. You can take them to schools, homes, offices, shopsand other places to use, very suitable for students, Staff, teachers, etc.