How to Use: 1. Install the catheter to the silicone plug at the bottom of the wine dispenser, and stretch the catheter to a suitable length. 2. Put the wine dispenser tightly on the mouth of the wine bottle, and then place the wine glass directly below the mouth of the wine. 3. Gently press the top button, the wine will flow into the cup evenly through the wine outlet. 4. If you don't need to sober up, just close the valve and close the stomata. Specification: Item Type: Electric Wine Aerator Model: MGS-KD-4 Features: Instant Decanting and Pouring Power Supply: 4 AAA Dry Batteries (Batteries Not Included) Weight: Approx. 365g / 12.9oz Material: ABS, Acrylic, 304 Stainless Steel, Aluminum Alloy Product Size: Approx. 5x11x11cm / 2.0x4.3x4.3in Base Product Size: Approx. 8.8x8.8x4cm / 3.5x3.5x1.6in Retracted Catheter Length: 14cm / 5.5in Extension Tube Length: 33cm / 13in Working Noise: <50dB Package List: 1 x Electric Wine Aerator (Battery Not Included) 1 x Catheter 1 x Base 1 x Manual