s: This product is used to measure the changes of the parameters of the temperature, humidty, atmospheric pressure. According to the variation tendency of the environment's temperature, humidty and air pressure, it can predict the weather accurately. Thus, it can be a multifunctional household weather forecasting instrument. Features: With barometer, thermometer and hygrometer, 3 in 1 multifunction, economical and practical Standard measuring range, predict the weather more accurately Lightweight and easy to install, suitable for hanging or placing on a surface Simple and elegant design make you more comfortable when using it Specifications: Measurement Range: -30~50; 0~RH; 970~1050hPa Resolution:1hPa, 1, 2%RH Accuracy: 2,5%RH(30~80%RH),5hPa(970~1040hPa) Diameter: 13cm/5.12" Thickness: 4.1cm/1.61" Quantity: 1 Pc Note: Please allow 1-3mm error due to manual measurement.pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Contents: 1 x Thermometer Hygrometer Barometer