Feature:1. This weather forecast bottle has temperature change detection function, different weather will produce different crystal changes.2. This solution in the a glass container consists of several chemicals. It can predict the weather and can also be used as a decor.3. When sunny day, the filling is on the bottom, and the liquid on the upper is clear.4. When sunny to cloudy, the filling of the bottle floats and layers.5. When cloudy day, the filling in the bottle will float and be more turbid.Specification:Condition: 100% Brand NewItem Type: Weather GlassMaterial: High Borosilicate GlassColor: Green, Pink, Purple, Blue (optional)Total Height: Approx. 12.5cm / 4.9inBottle Size: Approx. 11.5 x 6 cm / 4.5 x 2.4 inBase Size: Approx. 6.5 x 1.7 cm / 2.6 x 0.7 inWeight: Approx. 292g / 10.3oz.Package List:1 x Bottle1 x Base1 x Instruction ManualNote:1. Please allow 0-2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.