Bamboo Office Calculator 12-Digit LCD Screen School Special Gift Christmas Calculate Commercial Tool Battery Solar Powered | Calculators Feature: Extra-large display Power: SOLAR Percent of total abdication Automatic shutdown common computer functions Specifications: 1. The calculator's design of 12 bits, the results are not rounded 2. When operation bits over 12, error handling, only reset by pressing ON/AC 3. When inputting errors, press the backspace key to delete bit by bit. 4. The calculator automatically shuts down after 12 minutes of no use. Then enter sleep mode, you can press ON/AC to wake it up. 5. When the operation result exceeds 12, negative numbers do not display a negative sign. 6. Avoid using it in strong light Dimensions: approx. 9.5*16.4*3.5CM Supply battery: solar energy for power, no need to replace the battery Package Contents: 1x Bamboo Electronic Calculator