Convenient to press buttons: the buttons of this standard function calculator are clearly separated and will not let you press the wrong button to produce wrong numbers; Moreover, the tool is intelligent and quick-response, which can improve your work efficiency and bring convenience to daily study^ Read clearly: the portable desktop calculator comes with 12 digits and large LCD display, which can clearly present the numbers or calculation results for you to read; The calculators are mainly made of plastic material, durable and reliable for long time use^ Dual power design: these portable electric digital desktop calculators are both battery-powered and solar-powered, which means this tool can be applied normally under natural or artificial light. and when it's dark, this calculator will run on battery, supports constant use all day every day^ Use occasions: these battery powered dual solar calculators are equipped with standard functions, which can help you solve basic calculation requirements, deal with some numerical calculation problems, you can take them to school, home, office, stores and other places to use, ideal for students, staff, teachers etc. Product details: you will receive 2 pieces basic standard function calculators in 2 different colors, each calculator measures approx. 5.5 x 3.3 inches, lightweight and compact to carry around; you can also share one with your brother, sister, classmate or friend.