This solar-powered toy calculator operates without batteries, though it includes a 1 x AA battery slot for sound effects. The solar panel activates the functional calculator feature. Designed for interactive learning, the set includes a working calculator with large buttons, play money (25 bills and 40 coins in life-size dimensions), a bank card, and an educational booklet to help develop math skills. The 67-piece set also features a built-in write-and-wipe board with a dry-erase marker for notes or calculations. Packaged in a colorful box, this set is suitable for children ages 3 and up and makes a practical gift for birthdays or holidays.