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It’s a Rotating Detonation Rocket Engine"
What makes the RDRE so revolutionary is that it makes use of a sustained detonation circling around a ring-shaped channel, fed by a mix of fuel and oxygen which is ignited by each passing explosion.
Crucially, the RDRE uses less propellant fuel than conventional rocket engines, and is simpler in terms of its machinery and mechanisms. That means going into space becomes cheaper, and traveling further distances becomes possible.
Saved you a click.
I seem to recall high end watches being a way to avoid carrying large amounts of cash across borders. Maybe even for money laundering (although that seems cumbersome).
People can carry tens or hundreds of thousands across borders in their luggage as personal wardrobe accessories. Once they arrive at their destination, find a dealer who will buy a watch for cash and they have loads of local currency without paying bank transaction fees or getting government haircuts.
Not that I think that’s what’s going on here, but it may be the media shining a spotlight on it for some reason.