It is the "Junkers JU-87B Stuka" balsa wood and tissue paper model. Rubber band powered converted to radio control.

00:00 Build
01:44 Maiden flight

You can get the model here:
https://www.guillow.com/junkersju-87b...

Micro RC components like the ones I used can be found here:
https://www.buzzardmodels.com/