Meaning of 'Has a nice ring'

[Kricha]

In Prison Break Season 4 episode 10

While Michael and Sara were waiting for the test results in the hospital, they had a chat as follows:

SARA: I needed to make sure that I would have access to your test results,

so I told the triage nurse that I was your wife.

MICHAEL: (with a grin on his face) Has a nice ring.

My question is what's the meaning of 'Has a nice ring' that Mike said?

[Alan]

Hi Kricha,

If you say: That has a nice ring (about it), you are simply saying that it is pleasant to hear/listen to.

Alan
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English as a Second Language
You can read my ESL story Colour Idioms

[Kricha]

Thanks Alan,

It's a pleasant indeed!