The Casio DJ-240D PLUS is a robust 14-digit desktop calculator designed for heavy, everyday office use, offering both solar and battery power for uninterrupted operation. It features an extra-large, clear display and a durable metal faceplate, making it suitable for long hours of accounting or administrative work. The calculator supports 300-step Check & Correct, allowing users to review, verify, and correct lengthy calculations with ease. Its Recheck with Sound Assist function alerts you with an audible tone when detecting input errors, ensuring maximum accuracy. Equipped with Tax, Profit Margin (MU), Mark-up/Mark-down, and Grand Total (GT) keys, it simplifies complex financial operations. The key rollover and large, responsive buttons make typing comfortable and precise, even at high speed. It also includes independent memory, square root calculation, and double-zero key for efficient number entry. The calculator’s ergonomic angle ensures optimal visibility on any desk. Combining durability, accuracy, and user-friendly design, the DJ-240D PLUS is a reliable choice for accountants, cashiers, students, and professional office environments.