Silicone wine stopper with activated carbon filter. The patented mechanism of the AntiOx stopper stops the oxidation of the wine and preserves the contents of the opened wine bottle for several days, up to ten days. The stopwatch is easy to use as no separate pumps are required. The date indicator lets you see when the bottle is opened. The stopwatch is also safe - it closes the bottle completely hermetically, regardless of position, however, it is recommended to keep the bottle upright to ensure the best shelf life. The activated carbon filter lasts for at least 5 years and cannot be replaced. Cleaned by rinsing in lukewarm water, not dishwasher safe.