Seems to be working. Definitely airtight. I don't know if the CO2 valve works or does something. It looks good on my kitchen table. I have 2 criticisms. First, the price. It's expensive for what it is, especially given my second criticism of the fit and finish. Second, it literally has some rough edges. The clasp has sharp edges where it is stamped from sheet metal. The canister is solid and the lid closes well. It's just a clasp that's a bit cheap and tasteless. Every time I open it I feel like I'll cut my finger on the sharp edges. It would have gotten 5 stars if the quality had been better or reflected in the price.
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