Never Need Batteries! Tiny built-in solar panel absorbs sunlight that sets this frog waving and bobbing on an imaginary breeze. Use indoors on a sunny window sill or outdoors in a bright, covered area. Delightful on your desk, too! Plastic. Colors may vary; our choice please. About 4.25 tall. WARNING: Choking hazard - small parts. Not for children under 3 yrs.