This is the thing:
It ended up costing $30 on TEMU, whatever it is. I probably overpaid — other sellers have something similar looking for less.
I couldn’t find a manufacturer or model in the product description (linked “manual” says it’s R-333BT). The manual is just a list of product specifications. The main features are: red and stereo. It reminds me some of the Evche EC-2110BTS, a device that has a solid speaker.
Shortwave coverage looks like 8 to 16 MHz. MW is 530 – 1600. FM 88-108.
Reviewers said it’s very loud.
Additional features include Bluetooth, MP3, equalizer, AUX input, disco lights and a flashlight.
The product description says batteries not included. The “manual” says 4 D cells, but also an internal rechargeable battery.
Likely destination: Goodwill store, but it might get used as a Bluetooth speaker.