Monta Caliber M 23

Monta Caliber M-23

Monta Caliber M 23

ManufacturerMonta
Caliber NumberM-23
In-House?
No
Base Caliber
ETA 2893-2 or Sellita SW330-1
Movement Type
Automatic, self-winding mechanical
Lignes11.5”’
Diameter
26.20mm
Casing Diameter
25.60mm
Thickness4.10mm
Jewels21 or 25 (depends on the case caliber)
Beat Rate / Frequency
28,800 bph / 4Hz
Lift Angle51 degrees
Power Reserve42 hours
Anti-Shock Device
Incabloc
FunctionsCentral hours; central minutes; central seconds; central GMT hand; date at 6:00
GMT Style
Caller GMT
Hacking Seconds?Yes
Quick Date?Yes
Country of ManufactureSwitzerland, Swiss made
Known Models
Monta Atlas, Monta Skyquest, Monta Noble Voyager

The Monta caliber M-23 is an automatic movement used in the microbrand’s Atlas and Skyquest models. It features a second time zone via a centrally located GMT hand, as well as a date window located at 6:00.

In Monta’s own words:

“The MONTA M-23 caliber is an automatic movement featuring a beat rate of 28,800 beats per hour (4 HZ) and displays hours, minutes, seconds, date, and GMT functions. It also features hacking seconds to allow for precise synchronization. Manufactured and assembled entirely in Switzerland, it is designed for an active lifestyle and features a 42-hour power reserve.” -Monta

Base Movement:

This movement can be based on either an ETA caliber 2893-2 or Sellita SW330-1, making it what Caliber Corner calls a Forrest Gump movement.

In this post on Instagram, @montawatch says:

“The Skyquest features our MONTA caliber M-23 which is either a Sellita SW330 or ETA 2893-2 base movement. We add a custom rotor and our in-house watchmaker performs the final QC to ensure accuracy.”

There doesn’t seem to be an option to select one or the other when placing an order on their site. If you have a Monta timepiece with this movement, please comment below which base movement you received and share your experience with selection.

Monta Caliber M23

Updates/News:

  • July 2024 – Monta introduces the Noble Voyager with either a blue or green dial.

Additional Resources:

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