Feature-Clock Function-Sleep Function-Temperature can be switched-Temperature Display Resolution: 0.1 centigrade-0.4 centigradeSpecification1. Date/time， week/s display， you can switch 12/24 hour2. It has clock function3. It has a sleep function4 .shows the temperature can be switched5. Can record the maximum / minimum indoor and outdoor temperature6 .Temperature Display Resolution: 0.1 centigrade-0.4centigrade7. frost alarm: (Temperature range)-1 degrees Celsius to four degrees Celsius8. Screen Size:8.2*3.8cm9. Overall size:8cm*10.5cmPackage Included:1 x Double-display Thermometer with Sensor( Battery no included ) 1 x gummed paper