Perfect blend of toy and useful product: Duck-shaped digital thermometer with measuring function, measures both water and ambient temperature Measuring range: 0-50°C (32-122°F), Accuracy: +/- 1°C, Battery included: 1 x CR2032 Easy to use: Push-to-turn thermometer, Automatic shut-off Fun, fun, and safe: Red indicator light illuminates when the water temperature is too high