Nomos Glashutte Watch Tangente Sport Neomatik 42 Date Marine Black Sapphire Crystal 581. Tangente Sport here in the version with a marine black dial is more robust than any previous NOMOS watch. The neomatik date caliber, DUW 6101, is protected against knocks, blows, and leaks by an extra robust case, sealing, and sapphire crystal glass. The brand new bracelet, handcrafted from stainless steel and featuring an elegant deployant clasp, is the perfect finishing touch.