3920 is the latest Roku Premiere, released in 2019. It only supports an IR remote. You can get an official Roku IR remote, or you can get an inexpensive universal IR remote locally -- just be sure it says it can control Roku.
Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T