I bought them at the same time (11/7/16)
No email from Amazon.
Not everyone is going to get this email. They are most likely reaching out to people who received a batch of counterfeit products from a third party seller. Sometimes, even if you order through Amazon as the seller, you will receive third party stock.
If they were made in China the green paint most likely contains lead.
Just so happens a new e-mail came through this afternoon with some more information:
The gist is here --> "Howard Leight by Honeywell did not manufacture or supply the item you previously purchased through the Amazon.com website and it is not subject to Honeywell’s warranty. Because that product may present a safety risk, we strongly recommend that you stop using the item immediately."
They're also offering $5 off replacements (Sold by Amazon only, not 3rd party sellers) with code HONEYWELL5 at checkout
They are crediting my account. They don't even want me to send it back. I looked at the pair I use as my primary and the product code is different. R-02524 vs. the one they told me to stop using R-01526.