With its excellent resilient round keys, this calculator provides a gentle but clear sense of feedback for long-lasting operation without strain. Featuring a notepad function, this calculator allows you to record the results of your calculations at any time, improving your learning and working efficiency and saving paper. It is constructed of ABS material. The length of this product is 18cm, the width is 15.5cm and the height is 1.1cm. It is suitable for students, teachers, businessmen and so on. Item Name: Calculator Material: ABS Features: High Accuracy, Dual Power Supply, Sensitive Buttons Battery Capacity: 120mAh Standby Time: Around Six Months Size Details: L: 18cm/7.09", W: 15.5cm/6.1", H: 1.1cm/0.43" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Calculator 1 x Handwriting Pen 1 x Charging Cable