Smart calculator and LCD writing board, 12-digit display, you can calculate while recording.
The writing board supports repeated writing, you can write and record information at any time without paper and ink, which is convenient, practical, and environmentally friendly.
LCD screen, no blue light, protect eye health.
With erase and lock buttons, you can clear the entire screen by clicking the erase button. The lock button prevents the accidental deletion of data.
Replaceable batteries, no need to charge and plug in to use. Low power consumption and long service life.
