Description:The weather forecast bottle is made of glass with liquid inside. It is used to detect air pressure. It reads the change in air pressure and predicts weather changes after a few hours.Beautiful and natural drop-shaped glass crafts. Under the light, observe this charming sealed glass tube. If the frosty snow-like feathers bloom, the crystal will change when it is affected by atmospheric pressure and temperature. Forecast the weather.Features:A transparent solution consisting of several chemical substances in a glass container. Because of climate change, the shape of a variety of crystal will have a change.Because it is a kind of crystal, so its change is not fast, it will change with the weather slowly change. Can be free to place, please enjoy the changes in a favorite place.Although the crystal chemical reaction remains a mystery, but in the changes of the seasons, can feel the changes of wonderful beauty of the crystal is a pleasure.Specifications:Condition:100% Brand NewMaterial: GlassColor: As shown in the pictureSize: Approx.19cm/7.5in(H)Weight: Approx.690g/24.3ozPackage List:1*Weather Forecast Bottle1*Instruction Manual1*Accessory