Clear LCD Screen Display Fahrenheit (F)The digital hygrometer thermometer uses a 1.57-inch LCD display with large bold numbers to show temperature in Fahrenheit (F). Accurate Temperature Humidity SensorTemperature measuring range: -58F to 158F; Humidity measuring range: 10% to 99% RH. Measures conditions every 10 seconds. Temperature measurement accuracy: 2F; Humidity measurement accuracy: 5% RH. Air Comfort IndicatorFeatures an internal humidity sensor with an emoticon avatar. A smiling face indicates optimal temperature and humidity levels. Long Battery LifeThe indoor thermometer hygrometer is powered by a CR2032 battery, which lasts longer than standard LR44 button batteries. Satisfactory After-Sales ServiceIf you have any questions about the product, please . We are committed to helping resolve any issues to ensure a positive shopping experience.