Yes, but How Does It Work? that is not at all clear. There is Argon gas involved, and the, apparently, metal containers.
I think you spray the thing into the bottle of wine and it pushes all the air out to keep it from oxidizing. But that’s just a guess from me. I’ll ask the wine team to clarify.
Edit: Yep, I was right.
Simple to use, two quick bursts in to the bottle, and the 100% argon gas will create a barrier preventing oxidation. Be prepared, a full canister feels empty … however also to now open whatever you want whenever you want. Extra canisters make great wine/hostess gift
How many “bursts” per can would you estimate?
From the description on the mothership:
Each canister has over 100 bursts enough to protect 50 bottles of open wine
https://www.amazon.com/VineyardFresh-Wine-Preserver-Set-2/dp/B00CAAFVKW