PTS Resources LTD Caliber PTS Z2031 Watch Movement

Manufacturer	PTS Resources Limited
Caliber Number	PTS Z2031
Movement Type	Automatic, self-winding mechanical
Diameter	33.6mm
Height	6mm thick
Jewels	22
Beat Rate / Frequency	21,600 bph / 3 Hz
Lift Angle	Unknown (needs confirmed)
Hand-Winding?	Yes
Hand Count	5
Functions	Central hours; central minutes; open balance wheel and small seconds at 6:00; dual time subdial at 9:00; day/night indicator at 12:00
Hacking Seconds?	No
Other Features	Double barrels
Country of Manufacture	Made in China
Known Models	Ingersoll caliber 416 watches, Archetype Rogue Automatic, Invicta Reserve Mammoth (Add your watch to the comments below…)

PTS Resources caliber Z2031 (Shandong Liaocheng Zhong Tai Watch Company?) is a semi-skeletonized automatic watch movement with 22 jewels and a frequency of 3 Hz (21,600 beats per hour). This caliber is made in China. There is a similar caliber Z2032.

Some of the topics covered in this caliber listing:

Functions:

The Z2031 is a multi-function automatic movement with an open balance wheel at 6:00, second time zone (dual time) subdial at 9:00 and a day/night (sun/moon) indicator at 12:00.

How to set the dual time?

The dual time subdial is a true second time zone indicator and is set independently by turning the crown backwards in time setting mode. When you turn the main time backwards, the dual time hands will also move. When the dual time subdial is set to the desired time, you can then proceed to move the main hands forward to the correct time.

How to set the moonphase?

There is no moonphase on this movement. It is a day/night indicator aka sun/moon indicator.

How to set the day/night indicator?

The day/night indicator follows the time set on the central hours/minutes. In other words, it is set automatically depending on the main time and cannot be set independently.

Double Barrel:

The PTS caliber Z2031 features double barrels (two mainsprings). Although this is a feature used to get more power reserve out of a watch movement, PTS Resources does not list the power reserve in their tech information.

Additional Resources:

Similar Ingersoll caliber 416

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Jon Mall

2 years ago

Svalbard Watches uses the “PTS Resources 5833” automatic movement, in at least two of their watches, the Expedition FL44 and the Noonday FL17.

richard

1 year ago

this is a z2031

Author

calibercorner

Reply to richard

Hi Richard, thank you for sharing a pic of the Z-2031 powering your Invicta watch. Would it be ok to use this photo as the featured image in this caliber listing? Credit would be given to you of course.

Kripal

Brand: IngersollCollection Name: The JazzModel #: I07702Case Material: Stainless SteelCase Thickness: 15.5 mmCase Diameter: 42 mmBezel: FixedMovement: AutomaticCaliber: LiaoCheng Z2031Crystal: MineralDial Color: Silver

djpahit

Reply to Kripal

I wonder if the Jazz model of Ingersoll could be fitted with small seconds hand on the 6 oclock exposed mechanism. Apparently, it doesn’t have at the moment.

Sumit

This calibre is used in earnshaw longitude series

EvolveR

11 months ago

This caliber is used in Carl von Zeyten watches (CvZ)

John Fitzpatrick

7 months ago

How do you set the secondary time on the Z-2031 movement. It’s an Invicta 53mm Mamouth watch.

OctopussJosh

5 months ago

Reply to John Fitzpatrick

Nobody knows, lol

Hi John, to set the dual time subdial, try turning the main time hands backwards. This should also move the dual time subdial hands. When your dual time hands are set to where you want them, you can turn the main hands forward to the desired time.