10 + 2 digits multi-line display, Natural Textbook display, 272 calculation function. Screen display with high resolution dot matrix (dot matrix). There is a QR Code Hologram sticker to verify the authenticity. Calculate trigonometry and calculate the logalithm. Simple plant-based calculations. Calculation of Statistical and Regression 252 Functions Easy Menu Function Certified For GCSE/CIE, O/A/AS Level Cell Powered (LR44)