Difference Between 600A and 6009 and API control

The API support says that H6009 is supported, but doesn't mention anything about H600A. What is the difference between these models as I assumed that they were the same? The Govee website 1200LM bulb is the only 1200LM bulb they sell, and is listed as the H6009 which is listed in the API supported devices.

However the Amazon 1200LM bulb, which is also the only 1200LM Govee bulb they sell, when I set it up is listed as H600A.

Is there a difference between these two bulbs? Are only the ones sold directly from Govee listed as H6009 and supported by the API?

Thanks