Features: Large disc with bold numbers,large metal wall thermometer with hygrometer. with the 10cm diameter disc display,easy to read the temperature and humidity value from distance. Scale round thermometer with wide measurement range, our scale thermometer accuracy-is between - 30 to 50 to suit most kind of climates. Hygrometer could measure ambient humidity from indoors or outdoors, including greenhouses, warehouse, offices, laboratories, balconies, garden, etc. Environmental-protection,this wall thermometer implementing concept of green which without batteries, energy saving, environmental-protection. it use different bending degrees of temperature sensitive metals in different temperature environment to realize the display of temperature. Calibrate automatically,the thermometer will calibrate automatically, just place it at a-fixed location. after 2 hours, the pointer will match-the local temperature automatically. Exquisite-design, the outdoor thermometer/hygrometer with hangs hook,can display or hangs,metal discdesigned to show more-elegance. large instrument display for easy reading from a-distance. Specifications: Material:Metal Diameter: Approx.10cm/3.93inch Color:Brown/Gold Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the-difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Wall Thermometer