Simple operations requires just rotating the timer to set desired duration, making it easy for kids to use independently Color changing design motivates children by providing visual progress feedbacks during tasks and activities Visual timer management with 60minute rainbow display helps children understand time concepts and improve focus Powered by 1 AA battery ( not included) with up to 200 days of continuous operations for good Versatile usage for study, homework, reading time, or play limits to develop time management skills, Manufacturer: Xjdzineq