477Ref

Reference 477 is the sapphire-backed model of the NOMOS Tetra Die Unerreichbare, housing a 29.5mm square stainless steel case with a silvercut-polished dial, a rose small seconds sub-dial, rhodium-plated hands, and a turquoise seconds hand. Power is provided by the manual-wind Alpha calibre, which can be viewed through the sapphire crystal case back, and it is finished with a gray vegan velour strap.