Features:_x000D_ _x000D_ The weather forecast bottle is made of glass with liquid inside, durable in use. _x000D_ It is used to detect air pressure and it reads the pressure change and predicts the weather change. _x000D_ A very beautiful home decoration and a weather forecast bottle for predicting the next day's weather condition. _x000D_ It not only can be used as a weather forecast bottle, but also can be used as a nice home table decoration. _x000D_ When it's going to rain, the water in the thinner glass tube will be risen up, higher than the water level in the glass ball. _x000D_ When the sunny day, the water in the thinner glass tube will fall back to the same level as the glass ball. _x000D_ A nice gift for your family and friends, suitable for birthday gift, Valentine's Day gift and anniversary gift. _x000D_ _x000D_ Specification:_x000D_ Condition: 99.99% Brand _x000D_ Material: Glass_x000D_ Color: Blue_x000D_ Size: Approx. 15cm / 5.9in_x000D_ Weight: Approx. 157g / 5.5 oz_x000D_ _x000D_ Instruction:_x000D_ Put some water in the water-soluble pigment, cover a plastic tube on the injector, fill the injector with the color water, and inject it into the bottle. It takes about three times._x000D_ _x000D_ Package list:_x000D_ 1 * Glass Bottle_x000D_ 1 * Pigment_x000D_ 1 * Injector_x000D_ 1 * Instruction Manual_x000D_ _x000D_ Note:_x000D_ 1. Please allow 0-2 cm error due to manual measurement. Thanks for your understanding._x000D_ 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. 1The weather forecast bottle is made of glass with liquid inside, durable in use 2It is used to detect air pressure and it reads the pressure change and predicts the weather change 3A very beautiful home decoration and a weather forecast bottle for predicting the next day's weather condition 4It not only can be used as a weather forecast bottle, but also can be used as a nice home table decoration 5When it's going to rain, the water in the thinner glass tube will be risen up, higher than the water level in the glass ball