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A model name outlives the model. A brand ships a second revision with different codec support or a different driver, keeps the box art, and leaves the original specification sheet online for years — which is how a comparison table quietly goes wrong. Corrections that name the revision are the ones we can act on.
The other useful message is the one that fills a hole: 73 of the 125 pairs here publish no IP rating at all, and those cells are blank rather than guessed.
Your address is only ever used to reply to you. It goes on no mailing list and to no headphone brand.