MKS Factory Breguet Classique 5177BB 38mm Automatic Watch
The MKS Factory Breguet Classique 5177BB combines a restrained 38mm case diameter with an 8.5mm thickness, creating a relatively slim profile for an automatic mechanical watch.
This configuration uses a Japanese 9015-based automatic movement with exterior architecture styled after the CAL.777Q. Classical details include a coin-edge case band, slender lugs, blue-tone Breguet-style hands and a fired enamel-style dial.
An alligator-pattern leather strap completes the traditional dress-watch configuration.
38mm Case
The Breguet Classique 5177BB features a 38mm case, giving the watch relatively compact and traditional proportions.
The dimensions are particularly suited to the restrained character of the Classique collection, where the dial, hands and case details take precedence over a large sports-oriented wrist presence.
Its 38mm diameter also works together with the slim case profile to maintain balanced proportions when viewed from the front and side.
8.5mm Slim Case Profile
The supplied case thickness is 8.5mm.
For an automatic mechanical watch, this creates a relatively slim side profile and allows the case to sit closer to the wrist.
A thinner case can also make the watch easier to wear beneath a shirt cuff, which is particularly relevant to its dress-oriented design.
The combination of 38mm × 8.5mm is therefore one of the main dimensional characteristics of this configuration.
Coin-Edge Case Band
The exterior incorporates a coin-edge case band, adding fine repeating grooves around the side of the case.
This detail creates additional texture without significantly changing the restrained appearance of the watch from the front.
The case also incorporates slender lugs designed to transition smoothly from the main case body toward the leather strap.
CNC machining is used in forming the detailed exterior structure.
9015-Based Automatic Movement
This MKS Factory 5177BB uses a Japanese 9015-based automatic mechanical movement.
The movement is configured with visual architecture styled after the Breguet CAL.777Q design.
Automatic winding allows normal wrist movement to contribute to replenishing the movement’s stored energy during regular wear.
Because the underlying movement is identified as a 9015-based construction, this page does not describe it as an original Breguet CAL.777Q movement.
Automatic Winding
Normal wrist movement activates the automatic winding system during regular wear.
If the watch has remained unworn long enough for the movement to stop, it can be manually wound before the time is set.
As with other mechanical movements, actual timekeeping performance can vary according to regulation, power reserve, temperature, resting position and individual wearing habits.
No specific accuracy or power-reserve figure was supplied, so these values are not added.
Blue-Tone Breguet-Style Hands
The dial features slender blue-tone Breguet-style hands.
Their distinctive profile provides a classical contrast against the lighter dial surface while maintaining a relatively delicate appearance.
The blue finish also helps visually separate the hands from the surrounding dial markings.
The supplied information describes a heat-blued steel process. However, because no independent material or manufacturing verification was provided, the page avoids making additional claims about the exact thermal treatment.
Fired Enamel-Style Dial
The watch features a fired enamel-style dial, creating a smooth and restrained visual foundation for the hands and hour indications.
The supplied production information describes the dial as using a low-temperature firing process.
Its relatively clean surface complements the traditional case proportions and blue-tone hands rather than relying on a heavily textured sports-watch dial.
Claims such as “permanently resistant to discoloration” are omitted because long-term color stability depends on the actual material and manufacturing process.
Classical Dress-Watch Proportions
The combination of a 38mm diameter, 8.5mm thickness, coin-edge case band and leather strap defines the overall proportions of this configuration.
Rather than emphasizing case size or multiple complications, the design focuses on a relatively slim profile and traditional dial architecture.
These characteristics make the dimensional specifications particularly useful when comparing the 5177BB with larger or thicker automatic watches.
Alligator-Pattern Leather Strap
This configuration is paired with an alligator-pattern leather strap.
The textured leather surface complements the traditional character of the Classique design while providing a softer alternative to a metal bracelet.
Leather straps should generally be kept away from prolonged exposure to water, excessive humidity and aggressive cleaning products.
Allow the strap to dry naturally if it becomes damp.
Product Specifications
Item Specification
Factory MKS Factory
Brand Breguet
Collection Classique
Reference 5177BB
Case Diameter 38mm
Case Thickness 8.5mm
Case Detail Coin-Edge Case Band
Movement Japanese 9015-Based Automatic
Movement Styling CAL.777Q-Style Architecture
Winding Automatic
Hands Blue-Tone Breguet-Style
Dial Fired Enamel-Style
Strap Alligator-Pattern Leather
Style Slim Automatic Dress Watch
Case and Dial Design
The 5177BB combines several traditional design elements within a relatively compact case.
The coin-edge case band introduces texture around the exterior, while the slender lugs maintain a smooth transition toward the leather strap.
On the front, the lighter fired enamel-style dial provides contrast for the blue-tone hands.
Together with the 38mm × 8.5mm dimensions, these elements create a design focused on restrained proportions rather than an oversized wrist presence.
Wearing and Care Advice
Use a clean, soft microfiber cloth for routine cleaning of the case and avoid aggressive polishing compounds.
The dial is protected inside the case and should not require routine cleaning or contact.
Keep the leather strap away from prolonged water exposure and allow it to dry naturally if it becomes damp.
Protect the 9015-based automatic movement from strong impacts and magnetic fields.
No confirmed water-resistance specification was provided, so intentional water exposure is not recommended without appropriate pressure testing.
Frequently Asked Questions
What size is the MKS Factory Breguet 5177BB?
The supplied dimensions are 38mm in diameter and 8.5mm in thickness.
What movement does the watch use?
It uses a Japanese 9015-based automatic mechanical movement with visual architecture styled after the CAL.777Q.
Is it an original Breguet CAL.777Q movement?
No such claim is made. The supplied information identifies the underlying movement as 9015-based, so the page describes it accordingly.
What is distinctive about the case?
The case features a coin-edge side profile together with slender dress-watch-style lugs.
What type of dial does it use?
The supplied specification describes a fired enamel-style dial produced using a low-temperature firing process.
What type of strap is fitted?
The watch is paired with an alligator-pattern leather strap. The exact animal-leather origin is not claimed without additional material verification.
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