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Calculator Writing board combines a calculator with a writing board, it has a wide range of applications to meet a variety of needs. The handwriting board life is 50,000 times. • 349 calculation function & 4 calculation modes (COUNT, CMPLX, STAT, REG) • 2-line display, lcd screen, 6.5 inch writing area • Ultrasonic process shell with durable and shatterproof plastic • Plastic buttons are more sensitive and precise than silicone key. High-end quality & texture material • Dual power. Replaceable button battery & solar panels, long battery life • Folding design, portable, handy size. Ideal for junior & high school students, college students and professional researchers • Come with a 6.5 inch writing tablet and a pen. One click to erase, lock key to protect notes
