Multi-Function: Smart Calculator & LCD writing tablet, 12 digits display, write while calculating, convenient and practical.
Environmental Friendly: The writing pad supports repeated writing and is paper-free, with no ink and no dust. LCD screen, no blue light, protect eyes.
Erase & Lock Button: With an erase button, you can clear the full screen with a click. The lock key can prevent accidental deletion.
Replaceable Battery: Powered by 2 * CR1220 button battery, no need to charge and connect, ultra-low power consumption, long service life.
Wide Application: Small and portable, folding storage, very suitable for children or adults use in home, office, school, etc.