Fully Automatic Smart Wine StopperOur electronic wine stopper has a built-in smart electronic sensing system. Press the vacuum packing machine into the bottle, the blue light turns on and starts working. This immediately triggers the sensor to automatically vacuum the vacuum. After extracting the air, the blue light goes out. Enjoy the coolnessWhen the bottle pressure leakage exceeds -0.01MPa, the electronic cap will empty the gas in the bottle repeatedly, which creates a vacuum seal and stays fresh all the time. Note: After the red wine is sucked out and kept cool, please drink it within 7 days. Tilt identification design When the electronic wine stopper is in working condition , once the bottle tilt reaches 45, the anti-spill function will be triggered, and it will automatically stop pumping and remind you. It can avoid the liquor leaking inside the cork due to the continuous pumping after the bottle is tilted. Safe and Convenient: Food grade ABS materials ensure safety and hygiene. You just need to press one of our rubber stoppers into the mouth of the bottle and the wine stopper will automatically complete the work of preserving the wine. The LED indicator on the top lets you know the working status of the wine bottle stoppers clearly. Ideal gift for wine lovers: This elegant and functional stopper is a perfect gift for your favorite parents, your darling, your friends or yourself, special events, birthdays and other gifts. And our electronic caps are suitable for bottles with a diameter of 17.5-19.5mm. Please check the size before purchasing.