From the product description, check product page for current description, price and availability:

• Enjoy Wine On Your Own Terms – the Coravin wine system lets you pour wine effortlessly without removing the cork, so you can enjoy the rest of the bottle another day
• Pour Without Opening – when you pour wine without removing the cork, you have the freedom to drink what you love – not just the wines you have open
• Advanced Wine Opener – specially designed with Teflon coated wine needle made to be gentle on your wine cork and pour wine both quickly and smoothly
• Superior Wine Storage and Preservation – filled with ultra-pure argon gas (99. 99%), Coravin capsules are designed with patented technology to ensure that no argon escapes, and that nothing will spoil the taste of your wine, even after many years
• What’S Included – comes with model one wine Preserver and 2 Coravin Argon Capsules (Each capsule allows you to pour up to (15) 5-ounce glasses of wine)