The NOMOS Tetra Salvia 439 showcases a soothing sage green hue as part of the Tetra Origins collection. This model features a square 29.5mm stainless steel case and is accentuated by rhodium-plated hour and minute hands, along with a striking turquoise seconds hand. Among the four variations in the Tetra Origins series, Salvia stands out with its understated green tone, which is complemented by Ochra, Terra, and Basalt.

Measuring 29.5mm by 29.5mm with a thickness of 6.5mm and a lug-to-lug measurement of 40.5mm, the stainless steel case is secured with four screws and showcases both a sapphire crystal front and back. A key element of the Tetra design is the distinctive double lugs, while the slim profile ensures that the watch sits comfortably on the wrist. The water resistance of this timepiece is rated at 5 atm. The dial features a mix of numeral and marker designs, alongside a square minute track and a small seconds sub-dial positioned at 6 o'clock, which incorporates yellow and varying blue shades, highlighted by the turquoise seconds hand.

Powering the timepiece is the NOMOS DUW 4001, a manually wound movement crafted in-house, with a diameter of 10 ½ lignes and a height of just 2.6mm. This caliber includes 17 jewels, a power reserve reaching up to 53 hours, and is equipped with the NOMOS swing system. The movement can be admired through the sapphire case back. Completing the design is a beige vegan velour strap, featuring an 18mm lug width.