[Pocket Size Calculator]This Pocket calculator weighs only 90 g and measures 13.5 x 9.8 x 2.3 cm. It is light and slim, and the size is only that of the pocket. [Visualized Operation Symbol Display]When you want to calculate a number, it will express the symbol (plus, subtract, multiply, or divide) on the screen. It can help you see the operation steps when you operate continuously. [Solar Power Calculator]The calculator uses high conversion rate solar panels,solar power can be used in well-lit areas.At the same time, we provide matching battery double safe uninterruptible power.The calculator will shut down automatically after 8 minutes without operation. [ABS Engineering Plastic]This 12 digits calculadora is made of ABS high-strength engineering plastics, lightweight but durable. It can withstand the impact of falling from the height of the desktop several times. [30°Angled Desktop Calculator] The Screen of this desktop calculator is just opposite your sight, making all calculations