12-digit solar calculator with integrated LCD writing board for calculations and quick sketches This multifunctional tool combines a 12-digit calculator with an LCD writing board, enabling quick calculations and note taking in one device suitable for students and professionals. Key benefits - Multifunctional: 12-digit calculator plus integrated LCD writing board to handle numbers and visual notes in one compact unit. - Clear display: high brightness LCD for easy readability in a variety of lighting conditions. - Reliable power: solar powered with long standby time, reducing the need for frequent replacements. - Portable and practical: designed for everyday use in multiple environments, without sacrificing convenience. Best uses - In the classroom: perform calculations and sketch graphs or diagrams during lessons. - In the office: quick on-desk calculations during meetings or planning sessions. - While traveling: carry on business trips for on-the-go calculations and note taking.