Product Detailed Description

TW Factory Patek Philippe Nautilus 5726 40mm Automatic Watch

The TW Factory Patek Philippe Nautilus 5726 combines the recognizable Nautilus case architecture with a more complex calendar display and a natural rubber strap.

This configuration features a 40mm stainless steel case, Cal.324 automatic mechanical movement, horizontally striped dial and sapphire crystal with anti-reflective coating.

In addition to hours, minutes and central seconds, the dial provides date, day, month and 24-hour indications, giving the 5726 considerably more calendar information than a conventional three-hand Nautilus.

40mm Stainless Steel Case

The Nautilus 5726 features a 40mm stainless steel case.

The case follows the broad, horizontally oriented proportions associated with the Nautilus collection, combining curved exterior lines with an integrated sports-watch profile.

At 40mm, the case provides sufficient dial space for the additional calendar indications without requiring oversized dimensions.

Stainless steel also provides good durability for regular wear and can accommodate a combination of different surface finishing techniques.

Horizontally Striped Dial

The dial features the characteristic horizontal striped pattern associated with many Nautilus configurations.

These horizontal lines introduce texture across the dial while providing a visual background for the calendar windows, hands and sub-dial.

Because the 5726 displays several pieces of information simultaneously, the structured dial helps organize the different indications without relying on excessive decorative elements.

Cal.324 Automatic Movement

The TW Factory Nautilus 5726 is equipped with a Cal.324 automatic mechanical movement configuration.

The supplied functions include:

Hours
Minutes
Central seconds
Date
Day of the week
Month
24-hour indication

Automatic winding allows normal wrist movement to replenish the movement’s stored energy during regular wear.

If the watch has remained unworn and stopped, the movement can be manually wound before setting the time and calendar indications.

Mechanical accuracy can vary depending on regulation, power reserve, temperature, resting position and wearing habits.

Calendar Display

Calendar functionality is one of the defining technical features of the Nautilus 5726.

Rather than using only a conventional date window, the dial displays multiple pieces of calendar information simultaneously.

The day and month indications are positioned in separate windows toward the upper portion of the dial, allowing both to be read directly without cycling through different display modes.

This layout gives the 5726 a more technical character while retaining the overall Nautilus design language.

Date and 24-Hour Display at 6 O’Clock

At 6 o’clock, the watch incorporates a dedicated sub-dial containing the date and 24-hour indications.

The date indication provides a clear calendar reference, while the 24-hour display helps distinguish between daytime and nighttime hours.

This is particularly useful when setting or checking the calendar mechanism because it provides additional information about the movement’s current position within the 24-hour cycle.

Day and Month Windows

The calendar layout includes dedicated day and month windows positioned in the upper section of the dial.

Separating these indications into individual windows allows the wearer to read the calendar information at a glance.

Together with the date display at 6 o’clock, they create the characteristic multi-calendar arrangement of this 5726 configuration.

Central Seconds Display

Running seconds are displayed through a central seconds hand rather than a separate small-seconds sub-dial.

This allows the primary time display to remain conventional while leaving the 6 o’clock sub-dial available for calendar and 24-hour information.

The central seconds hand also provides an immediate visual indication that the mechanical movement is operating.

Sapphire Crystal with Anti-Reflective Coating

The dial is protected by a sapphire crystal with anti-reflective coating.

Sapphire provides excellent optical clarity and high resistance to everyday scratches.

The anti-reflective treatment helps reduce glare, which is particularly useful for a dial containing multiple calendar indications and different reading levels.

Despite sapphire’s high surface hardness, strong direct impacts against hard objects should still be avoided.

Natural Rubber Strap

This TW Factory configuration is paired with a natural rubber strap.

Rubber gives the 5726 a more casual and sports-oriented appearance compared with conventional leather or full-metal bracelet configurations.

It also provides good flexibility and resistance to everyday moisture.

After exposure to sweat or moisture, the rubber strap can be rinsed with fresh water and dried thoroughly using a soft cloth.

Avoid prolonged contact with aggressive solvents and chemical cleaning products.

Folding Clasp

The natural rubber strap is secured using a folding clasp.

The folding construction allows the two sections of the strap to remain connected when opened and provides a convenient closure system for regular wear.

Correct strap adjustment is important for keeping the 40mm case comfortably positioned on the wrist.

100m Water-Resistance Specification

The supplied TW Factory specification lists the Nautilus 5726 with 100 meters of water resistance.

Actual water resistance depends on the condition and assembly of the crown, seals, crystal and overall case structure.

A stated 100m specification should not automatically be treated as confirmation that every individual watch has been pressure tested to that depth.

Professional pressure testing is recommended before swimming or prolonged intentional water exposure.

Product Specifications
Item Specification
Factory TW Factory
Collection Patek Philippe Nautilus
Model 5726
Case Size 40mm
Case Material Stainless Steel
Movement Cal.324 Automatic
Time Functions Hours, Minutes, Central Seconds
Calendar Date, Day, Month
24-Hour Display Yes
Date / 24-Hour Display 6 O’Clock
Day / Month Upper Dial Windows
Dial Horizontally Striped
Crystal Sapphire Crystal
Crystal Treatment Anti-Reflective Coating
Water Resistance 100m Specification
Strap Natural Rubber
Clasp Folding Clasp
Style Automatic Calendar Sports Watch
Wearing and Care Advice

When adjusting the calendar functions, operate the setting mechanism gently and avoid forcing the controls if unusual resistance is encountered.

Particular care should be taken when the movement is approaching its automatic calendar-change period. Avoid unnecessary manual calendar adjustments during this period.

Clean the stainless steel case with a soft microfiber cloth.

The natural rubber strap can be cleaned using fresh water and should be dried thoroughly afterward.

Protect the Cal.324 automatic movement from strong magnetic fields and heavy impacts.

Professional pressure testing is recommended before intentional swimming or prolonged water exposure.

Frequently Asked Questions
What size is the TW Factory Patek Philippe Nautilus 5726?

This configuration features a 40mm stainless steel case.

What movement does the TW Factory 5726 use?

The supplied specification identifies a Cal.324 automatic mechanical movement.

What calendar functions does the 5726 display?

The dial provides date, day and month indications, together with a 24-hour display.

What is displayed at 6 o’clock?

The 6 o’clock sub-dial combines the date and 24-hour indications.

What type of crystal does the watch use?

The watch features a sapphire crystal with anti-reflective coating.

What type of strap does this version use?

This TW Factory configuration is paired with a natural rubber strap and folding clasp.

 

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