Specifications: Temperature Range: -25~55 centigrade, -13~130 Fahrenheit Hygrometer Range: 20~100 Shape: Round Material: Copper + Zinc Alloy Color: Golden Diameter: 4.3cm/ 1.7in Thickness: 10mm/ 0.4in Weight: 22g/ 0.77oz Package Includes: 1 * Thermometer and Hygrometer Item"s color might be different from the picture because of the aberration.