"When working on this dive watch, I knew the elements that I wanted to include, and I hope those who purchase the watch enjoy it as much as I did in creating it.”

- William Massena

Due to the artisanal manufacturing process, there are slight variations in dial color.


Born from the idea of "What would a UNIMATIC watch from the 1950s look like today," the U1-ML6 began as a conversation between the two companies on how to create a high-quality wristwatch that felt modern and incorporated vintage touchpoints, while not relying on nostalgia alone. Housed inside the 41.5mm stainless steel case of the U1-ML6 is the automatic caliber Seiko NH35A 21600bph, with a power reserve of 41 hours.

The watch features a classic black bezel with a red triangle, reminiscent of the Rolex 6538, made famous by Sean Connery as James Bond in Goldfinger. The 15-minute marker on the bezel is the first time that UNIMATIC has featured it on one of its watches. Turning the 120-click unidirectional bezel is both an audible and tactile treat; the bezel hangs slightly over the diameter of the watch, making it easier to turn as well. Turning the watch over, the viewer is treated to a detailed engraving of the Greek god, Poseidon. Aside from the reference to the god of the sea, the engraving pays tribute to World War II veteran Alastair Robertson, an officer in the British Royal Navy. Before his retirement, he served as the navigator for the aircraft carrier HMS Ocean, the ship’s crest was that of Poseidon.

*Limit 1 per household

Sold Out



Technical Details UNIMATIC x Massena LAB   Ref. U1-ML6 Wristwatch
Movement Seiko NH35, Automatic 27.4mm, 21,600 BPH with 24 jewels. 41 Hours power reserve
Functions Hours, minutes, seconds. Bezel with red triangle and 15-minute marker, unidirectional rotating with 120 clicks
Dial Galvanized Tropical dial with gilt minute markers. Hand applied super-Luminova hour markers and hands. “fatto a mano” dial
Case Closed steel back with unique "Poseidon" engraving. Individual Limited Edition engraving
Crystal Sapphire crystal
Straps Horween Shell Cordovan Color 8 strap, black + Heavy-Duty UNIMATIC nylon Nato strap


Limited Edition of 99 pieces made by Unimatic

Unique handmade “Tropical” dial

41.5 mm Diver watch 300m water Resistant

Stainless Steel automatic watch


  • Reference NH35 manufactured by Seiko Corporation
  • Diameter: 27.4mm Height: 5.2mm, 24 jewels
  • Power reserve 41 hours
  • Automatic with bi-directional rotor and 41h power reserve
  • -20/+40 Seconds per day accuracy
  • Hacking feature


  • Manufactured by Unimatic in Italy
  • Limited edition of 99, each individually numbered
  • Unimatic tough case, warranty card with unique ID seal, 2 year warranty


  • Diameter: 41.5mm Height: 13.6mm
  • Stainless Steel case, aluminum bezel insert
  • Double doomed sapphire glass coated with anti-glare
  • Double crown seal
  • Water-resistant to 300 meters
  • Horween cordovan Color 8 leather strap with tang buckle
  • Unimatic Black NATO strap


  • Stainless steel case back with Poseidon engraving and limited edition numbering
Go to top
Join Waitlist We will inform you when the product arrives in stock. Just leave your valid email address below.
Email We won't share your address with anybody else.