KIDS CASH REGISTER: Working solar-powered calculator Includes 30 actual-size pretend bills, 40 plastic coins, pretend credit card, and activity guide. Pretend bills measure 6.25" x 2.625", pretend coins range from .80" (penny) - .995" (quarter) Makes a cha-ching sound when the drawer opens! Encourages imaginative play. Great for learning about money and math. Ages 3 and up.