Description: According to variation tendency of the environment air pressure predict weather accurately. It multifunctional household weather forecasting instrument. Offering you a digital and better living condition to keep healthy. EU standard movement dial outer casing made of aluminum- alloy once work fine show the model everywhere. Measurement Range: 960~1060hPa; Resolution: 1hPa Diameter: 108mm/4.25inch; Embed Diameter: 86mm/3.39inch; Thickness: 20mm/0.79inch Specification: Material: Metal Size: 108x108x20mm/ 4.25x4.25x0.79inch Package Includes: 1 Piece