The 12-digit Solar Power Calculator comes with a solar panel in the upper right corner, featuring a high-efficiency solar energy conversion rate that can be converted into electrical energy to support computer startup and use when left standing in a dimly lit environment. The automatic shutdown function can save energy to ensure the service life (Note: without battery compartment). Large Display The desktop calculator has a large digital display that can display 12-digit numbers and basic information clearly and easily for daily calculations. Comfortable Rubber Keys The solar powered calculator with large rubber buttons features good abrasion resistance, good elasticity and comfortable feel, and sensitive sensors on the bottom make it responsive, quick to rebound and easy to use. The pocket-sized calculator with a length of 101mm/3.97in, a width of 50mm/1.97in, a thickness of 7mm/0.27in and a weight of 0.4g/0.01oz, is lightweight and small in size. But sturdy ABS resin shell and aluminum alloy panel, wear-resistant, drop-resistant, environmentally friendly, non-toxic, durable, making it ideal for office, study or work. The wide application standard calculator can be operated with one hand, with the basic functions of addition, subtraction, multiplication, division, automatic shutdown, M+, M-, MRC, radical sign, percentage (%), which is perfect for supermarket cashiers, students, financial professionals, convenience store clerks. Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.