For a list of all currently documented Marvell chipsets with specifications, see Marvell.
AeroGarden Harvest Elite Wi-Fi
This "Elite" version has a stainless steel appearance. The AeroGarden 100661-BLK Aerogarden Harvest Wi-Fi is internally identical but has a black exterior.
"QT-K008-V1.1 2017.07.01" is silkscreened on a board in the FCC photos.
"SM008A PA1.1 2015-06-16" is silkscreened on the Wi-Fi module in the FCC photos.