Description: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.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.It is constructed of abs material.The length of this product is 13.2cm, the width is 7cm and the height is 2.05cm.It is mainly used for the early teaching of mathematical oral arithmetic to children.Item Name: Calculator MachineMaterial: ABSFeatures: Durable, Reusable, LightweightPower Supply: USB ChargingBattery: 400mAhSize Details:Size: 13.2cm x 7cm x 2.05cm/5.2" x 2.76" x 0.81" (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.