The latest haute horology piece from Ulysse Nardin is one complex piece of time-telling machinery, but that's not the most impressive part, its how easy it is to set. To get the tourbillon ticking all one needs to do is rotate the lower bezel one full rotation to wind the watch and power it for 12 hours. Time adjustment is just as easy too as there's no crown, the top bezel can be moved clockwise and counter-clockwise to change the time. Link
Bell & Ross shows their horological skills with the BR-X1 Chronograph Tourbillon
The ultimate Bell & Ross gets highly complex limited edition.