Specifications: Temperature Range:-10-50(14 ~ 122) Humidity Range: 20%-99% Temperature Accuracy:1 at 0~40,2 at other range Humidity Accuracy:5% 40%~80% at 25,8% at other range Resolution: Temperature 1, Humidity 1%RH Unit Size: 93.5114.522mm N.W.:137g Power supply: 1*1.5V(AAA) battery Features: 1. Large LCD, display temperature, humidity, weather situation, moon phase, time, date and week at same time. Calendar is from Jan. 1 2003 to Dec. 31 2052. 2. LED backlight function, more convenient to use the product at night. 3. Weather forecast function, predict the weather based on real-time temperature and humidity changes. 4. Alarm, Snooze, Hourly chime function 5. 12hr/24hr time mode adjust function 6. Temperature / switch function, can choose display Celsius or Fahrenheit to meet different people's habits. 7. MAX/MIN temperature & humidity memory function 8. Have bracket and the hanging hole behind the product, can be placed standing or hanging 9. Low power consumption, high precision and high stability