Upgrading the 3120 movement from a slow date change to an instantaneous jump.
After the mod, the date flips cleanly and instantly – no sluggish drag.
Upgrading the 3120 movement
Panguwatch-Independent Top-Tier Luxury Watches Watchmaker
Highest Modification For Top-Tier Brands-PP(Patek Philippe),RM(Richard Mille),AP(Audemars Piguet),Rolex
