Metal Dust-Proof Sealed Vacuum Wine Bottle Cap Stopper, Specification: Style J KVS-20 1. Material: metalABS 2. Small and compact, can be placed in a refrigerator 3. Sealed with silicone material, vacuum preservation 4. Dust-proof and anti-smelling, preserve fresh taste 5. Style I KVS-4: electric smart model uses 2 AA alkaline batteries (not included) 6. Style K KVS-21A: uses TYPE-C interface to charge and use, built-in 500mAh lithium battery 7. Style D [red wine vacuum fresh-keeping stopper] stainless steel silver push type with date scale: 47x72mm, 80g 8. Style E [red wine vacuum fresh-keeping stopper] stainless steel silverpress type: 41.6x57.5mm, 57.5g 9. Style F [red wine vacuum fresh-keeping stopper] Aluminum alloy blackpress type: 41.6x57.5mm, 44g 10. Style G [red wine vacuum preservation stopper] Aluminum Alloy RedPush Type: 41.6x57.5mm, 44g 11. Style H [vacuum wine stopper for red wine] Aluminum Alloy GoldPush Type: 41.6x57.5mm, 44g 12. Style I [red wine vacuum fresh-keeping stopper] ABS plasticelectric intelligent type: 71x71x48.5mm, 97g 13. Style J [Vacuum preservation of red wine with a pump and 4 plugs] ABS plasticpull-out type: vacuum pump 68x35x132 mm, wine stopper 34x34x32.5 mm, 90 grams 14. Style K [Vacuum Preservation of Red Wine with a Pump and 4 Plugs] ABS plasticelectric intelligent type: vacuum pump 46x141.5mm, wine stopper 34.2x41.5mm, 170g