Description:EARLY MATH LEARNING: Math learning game for kids oral arithmetic skill levels in addition, subtraction, multiplication and division.DIGIT DISPLAY: Digit display, the calculator helps mental arithmetic exercise, brain development, knowledge strengthening, logic exercise, etc.PORTABLE & TRAVEL FRIENDLY: Convenient and portable, perfect for math practice in. cars, airplane, travel.LEARNING ACTIVITY: Great activity for kids stay engaged, entertained, and learning outside of the classroom.BATTERY: 3Pcs AAA Battery, Not Included.Specification:Material: ABSSize Chart:16cmx10.6cmx3.8cm/6.30inchx4.17inchx1.50inchPackage Includes:1 Electronic CalculatorNote:1.This is not infant toy, please take away from children to avoid eating.2.Please allow slightly errors due to manual measurement and different monitors.