Glad to see all of these developments in watch escapements. There seem to be multiple strategies for reducing friction between the pallet stones and escape wheel in yhe seiss lever escapement. Also, there are new manufacturing techniques for precision parts, and hairspring materials. Can't wait to see this tech become more widespread!
Very interesting. I fail to understand how the balance wheel keeps oscillating in such escapement : On a swiss lever I though the palette fork was sending part of its energy (from the winding rotor) back into the balance wheel (so that it wound't stop). In such escapement, I don't get how energy is sent to the balance wheel...
Ok, after reviewing the video several times I realised that it's exactly what is explained when talking about the "direct impulse". That's a very elegant solution IMO.