Introducing the Unimatic X Massena Lab U1-MLB the Last of the Trilogy

The Unimatic U1-MLB ends the trilogy of diver watches made in collaboration with Massena Lab that started last year.

In March 2020, the first diver watch of this trilogy Ref. U1-ML6 was presented, and which, according to Massena Lab, served to answer the question “what would a Unimatic watch from the 1950s look like today?”, featuring a tropical dial with gilt accents, a black bezel with a red inverted triangle at 12 o’clock and a 60-minute scale with the first 15-minutes rated, case back engraved with “Poseidon”, the Greek God of the sea, and what came with the brown leather strap. A limited-edition of 99 pieces that quickly sold out.

In December at the end of 2020, Unimatic X Massena Lab unveiled the second watch of the trilogy Ref. U1-MLM, inspired by the dive watches used by the French Navy in the 1960s, which featured a vibrant blue on the dial whose color matched extended to the bezel, rated with a full 60-minute scale and dot lume at 12 o’clock, case back engraved with a marine anchor, and offered with olive with yellow line nylon loop strap. As the first in the trilogy, it was a limited edition, but now 200 pieces that also sold out within hours.

Now they present us the new and last Unimatic X Massena Lab of this collaboration with Ref. U1-MLB, inspired by the Blancpain “Bund”, which issued to West Germany’s Bundeswehr Kampfschwimmers, the group of elite special forces of the West German Navy. It features a black dial with an orange minute hand to differentiate it from the hour hand, a black “ghost” bezel, without any scale and only with a dot lume at 12 o’ clock, case back engraved with a submarine sonar motif, and is offered with an orange rubber strap and an extra black rubber strap. Like the previous edition, it is limited to 200 units.

All other specifications follow the previous variants, with a stainless steel case 40mm in diameter (41.5mm bezel) and 13.6mm thick, unidirectional and 120 clicks bezel, screwed crown with large guards, sapphire crystal, and 300 meters of water resistance. On the dial hour markers and hands are all filled with Super-LumiNova. Powered by the automatic movement Caliber NH35 manufactured by Seiko Corporation that offers up to 41 hours of power reserve.

The watch is offered in a special tactical-looking rigid case for the price of $ 895.


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General Specifications:


Brand: Unimatic

Model: Unimatic x Massena LAB U1-MLB


Dial: Black

Lume: Super-LumiNova

Case Material: Stainless steel

Case Dimensions: 41.5 mm Diameter, 13.6 mm thicker

Crystal: Sapphire Glass

Case Back: Stainless steel

Water Resistance: 300 Meters

Strap: Burnt orange, double-faced TPU strap with matching DLC buckle and an extra black rubber strap


Calibre: Seiko NH35

Functions: Hours, minutes, seconds, bezel

Winding: Automatic

Jewels: 24

Frequency: 21,600 Vph

Power Reserve: 41 Hours


Price: $ 895

Limited Edition: Yes, 200 pieces