The Engines
Every Liberi ships standard on a proven Japanese workhorse movement, with a Swiss-made upgrade available where noted. Every movement is regulated in-house to ±15 seconds a day before it ships.
Japan · Standard — Urban Mariner
The workhorse. A hand-wound, hacking automatic that's proven itself in dive watches worldwide — reliable, easily serviced, and built for daily wear.
Origin
Japan
Jewels
24
Beat Rate
21,600 vph
Power Reserve
~41h
Factory Accuracy
-20/+40 sec/day
Liberi-Regulated
±15 sec/day
Switzerland · Upgrade — Urban Mariner Only
Swiss-made and built to a tighter standard. The SW200-1 trades workhorse simplicity for a higher jewel count and finer factory regulation — standard grade, not chronometer-certified. Not offered on the Maritime Monster: its solid rotor and construction aren't suited to the open-heart skeleton case.
Origin
Switzerland
Jewels
26
Beat Rate
28,800 vph
Power Reserve
~41h
Factory Accuracy
±12–30 sec/day
Liberi-Regulated
±15 sec/day
Japan · Standard — Maritime Monster
The same dependable architecture as the NH35, opened up. A partially skeletonized movement that puts the mechanism on display without sacrificing durability.
Origin
Japan
Jewels
24
Beat Rate
21,600 vph
Power Reserve
~41h
Factory Accuracy
-20/+40 sec/day
Liberi-Regulated
±15 sec/day