Silicone Vacuum Wine Bottle Stopper, Champagne Bottle Stopper, Automatic Leak Proof Sealer, Reusable Kitchen KeeperIntelligent induction: When you press the wine cork into the bottle, it activates the sensor switch to start the air extraction function, providing a 2-in-1 effect.Automatic sensor system: The electric wine stopper maintains vacuum conditions inside the bottle for efficient storage and preservation.Atmospheric pressure detection: When the negative pressure inside the bottle drops by 0.01Mpa, the electronic wine stopper automatically restarts air extraction.Leakproof design: The electronic wine stopper operates at a 45-degree angle with an anti-pumping feature to prevent leakage.Power indicator: The champagne cork includes an LED light for real-time power monitoring, with a dust-proof bottom cover for convenient and hygienic storage.Specification:Material: ABS + Silicone.Size: approx. 7.1 x 7.1 x 4.85 cm / 2.80 x 2.80 x 1.91 inch.Power supply: 2 AAA dry cell batteries (not included).Package Includes:1 x Wine Cork