This clock is not only to show you precise time, but also show you room temperature and humidity. Thanks to its extremely elegant and stylish design, it is excellent to decorate apartments, offices, shops or restaurants. Large size dial lets you effortlessly even for the older person to see the time from anywhere in the room. Diameter: 30CM Thickness: 4CM Material: Aluminum frame Clock dial disc: art paper Power supply: 1x AA battery (not included) Quiet mechanic movement - smooth operation Extreme precise mechanic movement: quartz Embedded hook for easy installation Measurements: temperature and humidity Measurement temperature range: -30 ° C ~ + 50 ° C Celsius or Centigrade) , -30 ° F ~ 110 ° F (degrees Fahrenheit) Humidity measuring range: 0 ~ 100%