15407ST, Royal Oak Double Balance Openworked, Steel 3350 A Insight Micro-Rotor

A Insight Micro-Rotor

The 5170 replaced the Lemania based 5070 in response to greater emphasis being placed on in house movement design and manufacture

The 1140 is notable as one of the earliest Urban Jürgensen watches made under direction of Kari Voutilainen

leaving various sections of the chronograph entirely transparent

15407ST, Royal Oak Double Balance Openworked, Steel 3350 A Insight Micro-RotorA ref. 15407ST, a world first Double Balance Openworked Royal Oak. The Double Balance couples two balance wheels on a central pivot, 180 degrees out of phase with each other. This counters positional errors while adding doubling the effective balance wheel mass. To highlight this accomplishment, the 15407ST is thoroughly hand finished on all bridges with a standard rarely seen today, not shy to an interior angle. This innovation is all wrapped in