Scientific Calculators with Notepad: The calculator combines a scientific calculator with a notepad, allowing you can take notes while performing scientific calculations, effectively improving study and work efficiency. Simple to operate, perfect for students, work, and business Healthy -friendly: Our high school calculators use a blue LCD screen, which can reduce visual fatigue and protect the eyes. The LCD tablet can be written repeatedly, just press the clear key to erase notes, reducing paper consumption Solar and battery powered : The solar calculator has built-in 2 coin cells, 1 LR1120 battery for the calculator, and 1 CR1220 battery for the LCD writing board. In addition, it has a solar panel that can calculate under sunlight and even lamp light Lightweight Portable: This handwriting calculator only weighs 120 grams and measures 160x78x12mm, which can be folded and easy to carry. You can keep it in your bag, pocket, or even purse. You can take it out and use it anytime, anywhere Wide Usage: It is the perfect for office calculations, construction calculations, financial calculations, accounting calculations, student calculations, home calculations, etc. You can take it as a gift for your friends, family members, , , and classmates. Colour:black Material:ABS Package Contents: 1 x Scientific Calculators 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.