Temperature / humidity display . DegreeC / DegreeF temperature switching display . Highest / lowest temperature humidity function . 12/24 hour clock . Daily alarm clock function . Calendar display function Temperature Display Range: 14℉~122℉（-10℃~50℃） Temperature Accuracy: The accuracy is 1. 8℉/1. 0 Degree C, when range of temperature is between 14℉~+122℉(-50℃~+70℃) Humidity Display Range: 10%RH~99%RH Humidity Accuracy: The accuracy is 5%, when range of humidity is between 40%-80% RH. Battery: AAA 1. 5V Note: Please replace the battery if the battery had run down after months. Please clean the product regularly and do not use it near water. Use the black button of back face to change ℃/℉ or Reset. Product Detail: Material: Plastic Color: white Dimensions: 3. 94*3. 66*0. 91in