39 jewels40h power reserve28,800 vph (4 Hz)
The 3831E is an automatic mechanical caliber manufactured by Hangzhou Watch Company in China. It measures 36mm in diameter and 6.35mm thick, operates at 28800 vph, delivers 40 hours of power reserve, and contains 39 jewels. The movement features a double tourbillon with GMT complication, along with hour, minute, and celestial functions.
Last updated 15 Sep 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
39 jewels
Power Reserve
40h
Frequency
28,800 vph (4 Hz)
Diameter
36mm
Height
6.35mm
Display Type
Analog
COMPLICATIONS
TourbillonGMT
FEATURES
Sweep Seconds
QUICK FACTS
FOR WATCH DEALERS
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