Grand Seiko Spring Drive is the movement that glides in silence, and it is unique. Forget quartz and mechanical. Luxury is a smooth sweep, a 72-hour reserve, a hand-finished case. It is the watch that proved Japan can innovate, and it did.
The Cartier calibre 430 MC is the manual movement that powers the Tank, and it is charming. Forget quartz. Luxury is a hand-wound movement, a slim case, a clean dial. It is the movement that made Cartier traditional.
