1、Reliable and Portable: Kids calculator is made of ABS, which is skin friendly and durable, with LCD screen, clear voice prompts, and portable size 2、AAA Battery Power: Kids math calculator requires 3 AAA batteries to start using. Does not support charging, you can replace AAA batteries to use by yourself (AAA batteries are not included, please bring your own) 3、Play Method: Select your skill, choose your game (practice or challenge), read the questions and enter your answers, then make a sound to indicate correct and incorrect answers and track your success. (See the manual for more information) 4、Educational Toy: Versatile includes addition, subtraction, multiplication and division tests, math games, math formulas, time limit tests and more to encourage your child to learn 5、Holiday Gift: Educational math toy is suitable as a gift for children at Easter, Halloween, Children's Day, parties, birthdays, etc Item Type:Kids Oral Arithmetic Toy Material: ABS Model: S9 Battery Type: Requires 3 AAA Batteries (not included) Endurance: About 30 Hours of Continuous Use Speaker: 0.25W Screen: Black and White Digital Display Charging: Does Not Support Charging, You Can Replace the AAA Batteries to Use Key: 20 Silicone Keys, a Toggle Switch, a Press Switch Functions: Single Digit Addition and Subtraction, Two Digit Addition and Subtraction, Multiplication and Division, Games, Math Mnemonics, Etc. 1 x Kids Oral Arithmetic Toy 1 x User Manual