Description: This oral calculator can be used to exercise children's mathematical ability to add, subtract, multiply and divide, promote children's intellectual development and improve hands-on skills. This oral calculator exercises children's mathematical arithmetic skills in a game, and the practice process is easy and enjoyable, stimulating children's interest in learning mathematics. It is constructed of ABS material. The length of this product is 13.8cm, and the width is 6.8cm. It is mainly used for the early teaching of mathematical oral arithmetic to children. Item Name: Kids Calculator Material: ABS Features: Easy to Operate, Smooth Edges, Durable, Cartoon Color: Random Power Supply: 3 x AAA Battery(Not Included) Size Details: Size: 13.8cm x 6.8cm/5.43" x 2.68" (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 Kids Calculator