Among the Tetra Origins series, the NOMOS Tetra Terra 438 showcases a rich terracotta red hue, uniquely combining a square stainless steel case measuring 29.5mm on each side with a warm red dial. Its elegant design features rhodium-plated hands, a striking turquoise seconds hand, and is powered by the hand-wound DUW 4001 calibre. This model stands out alongside its companions—Ochra, Salvia, and Basalt—as the variant with a warmer tone.

The stainless steel case, characterized by its double lugs and a sleek height of just 6.5mm, ensures that the watch sits comfortably on the wrist, maintaining a flat profile. Water-resistant up to 5 atmospheres, it is securely held together with four screws, and protected by a sapphire crystal on both the front and back. The terracotta red dial features a unique layout of mixed numerals and markers, a square minute track, and a small seconds sub-dial at 6 o'clock, accented with soft lavender, yellow, and light blue tones. The rhodium hour and minute hands provide an elegant contrast to the vibrant dial, while the sapphire case back reveals the intricacies of the NOMOS DUW 4001 movement, which boasts 17 jewels and a power reserve of up to 53 hours. The watch comes with a beige vegan velour strap, designed with an 18mm lug width, completing its sophisticated look.