@DougNewton
They are the same device. The old identifier RW used to mean Retailer Walmart.
The 3820R2 is now sold both at Walmart and on the Roku website.
https://www.roku.com/products/roku-streaming-stick-4k
https://www.walmart.com/ip/Roku-Streaming-Stick-4K-HDR-with-Roku-Voice-Remote/913284187
Here is an ebay seller offering the 3820RW2 ebay
----
The 3820R2 and 3820RW are the same device, same Voice Remotes, same price, same everything; just different retailer markings to indicate the point of sale.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102