This is a device that supposedly allows you to easily predict the weather at home. I'm selling it to someone who is interested since I don't use it. It has been stored at home for a long time, and the injector and box tape have naturally faded. Please refrain from purchasing if you are concerned, as it is stated in the description. It's a glass barometer that visually predicts the weather. It seems to predict weather changes a few hours later based on the water level in the glass tube due to changes in atmospheric pressure. It's unused, so its accuracy is unknown. Please purchase it with the understanding that it's more of a novelty item. No price reduction is possible, and I will not respond to price reduction comments. - Product Name: Weather Forecast Glass - Type: Barometer - Set Contents: Main unit, syringe, ring, instruction manual - Material: Glass - Color: Transparent, Blue Thank you for viewing. Weather forecast, glass, atmospheric pressure, rain