【Pocket Size Calculator】This Pocket calculator weighs only 90g and measures 13.5 x 9.8 x 2.3 cm. ,light and slim, which is only the size of the pocket. 【Visualized Operation Symbol Display】When you would like to calculate the number, it will express the symbol (plus, subtract, multiply or divide) on the screen. It can help you seeing the operation step 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 handheld calculator is made of ABS high strength engineering plastics, light weight but durable. It can withstand the impact of falling on the height of the desktop for several times. 【30°Angled Desktop Calculator】 Screen of this desktop calculator is just opposite your sight, make all calculation easy to read. Separated big buttons, made of ABS plastic, match with your fingers’ curve, make your every press more accurate and work more efficient.