1.Dual Functionality Design: This innovative device combines a 12digit solar calculator with an LCD writing board, allowing you to perform calculations and take notes or sketch ideas on the same device ideal for students, professionals, and anyone needing quick math solutions alongside notetaking capabilities. 2.EnergyEfficient Solar Power: The calculator operates on solar energy, eliminating the need for battery replacements while providing reliable performance with its bright LCD display that ensures clear visibility of calculations in various conditions. 3.Writing Solution: The integrated LCD writing board lets you jot down notes, reminders, or quick sketches with the included stylus pen, then erase with a simple button press reducing paper waste while keeping your thoughts organized during work or study. 4.Portable Construction: Crafted from sturdy ABS material, this lightweight calculator measures 26.8×16.7×1.7cm and is designed to be comfortably held in one hand, making it the ideal companion for classrooms, offices, or business trips.