Logical One Black Titanium

Logical One is equipped with a type of fusee-and-chain constant-force transmission. The system developed by Romain Gauthier solves two of the inherent problems of the fusee-and-chain - namely the need for small and therefore fragile links to wrap multiple times around the fusee, and the fact that the chain is often transmitting force at an angle - by replacing the fusee with a slowly rotating snail cam, positioned at 10 o'clock to the left of the hours and minutes dial. Because the snail cam and barrel are on the same level, force is always transmitted in a straight line. Also, as only a single, short length of chain is needed, the links, which are made from synthetic ruby, can be larger and stronger. The watch is wound by an innovative ergonomic pusher. Additional features include a balance that is visible through the dial, sapphire plates inside the barrel, and an indicator for the 60-hour power reserve. This Logical One is proposed in black titanium.