Description: EARLY MATH LEARNING: Math learning game for kids oral arithmetic skill levels in addition, subtraction, multiplication and division,Special exercises, thinking training, interesting games, automatic judgment, oral arithmetic training, timed answering, listening to oral formulas . FEATURE: Perfect for addition, subtraction, multiplication and division formulas,timed training: 5 seconds, 10 second,Can consolidate wrong questions and timed answer questions, Chinese pronunciation . BATTERY POWERED: Powered by Three AAA batteries, the calculator helps arithmetic exercise, brain development, knowledge strengthening, exercise, etc . PORTABLE & TRAVEL FRIENDLY: Convenient and portable, perfect for playing in. cars, airplane, travel . LEARNING ACTIVITY: Great activity for kids stay engaged, entertained, and learning outside of the classroom . Specification: Material: ABS Size Chart: 15.5cmx7.5cmx2.5cm/6.10inchx2.95inchx0.98inch Package Includes: 1 Electronic Math Game Note: 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.