Black on both sides of the case gives the small bright details inside the dial a stable frame. The tonneau remains recognizable without a color break at the lugs, and the band does not distract from the open center. For a regular rotation, the quieter strap makes the RM 35-01 easier to wear across casual and smarter settings; its character comes from the dial architecture and manual interaction rather than a strong band color.
The RM 35-01 red strap shares the broad open-dial character but shifts the first impression to the band. Black keeps attention on the tonneau shape and the mechanism; it is the more restrained choice across the pair.
This RM 35-01 uses manual winding, so its appeal includes the daily interaction at the crown. In the black configuration, that mechanical interest stays personal and close-up rather than being announced by a strong external color.
Before dispatch, our QC team reviews dial openness, black strap seating and the visible case edge.