About This 【Irregular Highly Feedback Keys】Its keys are special and different from normal, make you have different touch feeling in different keys, help you recognize what you pressed. Normal-use "+" and "=" are magnified, so easy to read them. Please kindly know that this is not quality problem. If you mind this, we would suggest you another style OS-6815 of us. Welcome to check it in our shop. 【Ergonomic Angle Display】When you put the calculator on the desktop,the 30° large display is just opposite your sight,more clear than a horizontal display. Big size and “click” sense of press button make your every press more accurate,work more efficient. 【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. 【ABS Engineering Plastic】This 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. 【Dual Power】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（included one AAA battery）double safe uninterruptible power.The calculator will shut down automatically after 8 minutes without operation. Overview Brand : pendancy Color : 2135 Pro-2pcs Calculator Type : Standard Function Power Source : Solar & AAA Battery Screen Size : 5 Inches
