Patek Philippe Nautilus 5726A-001 Replica 40.5mm – 904L Stainless Steel, Silver-Grey Dial, Clone Calibre 324 S QA LU 24H, Black Alligator Strap
Movement
The 5726A-001 variant features a cloned Calibre 324 S QA LU 24H, integrating both the central display of time along with a fully calendar-based dial. Hours, minutes, and central seconds are complemented with the displays of day, month, date, moon phases and the 24-hour indicator.
All complications are placed on a dominant vertical axis: day and month displays are revealed via two apertures under 12 o’clock, while moon phases and the 24-hour display are placed below a separate date aperture.
- Calibre: Clone Calibre 324 S QA LU 24H
- Functions: Hours, minutes, central seconds, day, month, date, moon phase and 24-hour indication
- Day & Month: Twin apertures below 12 o’clock
- Moon Phase & 24-Hour Display: Lower central sector
- Date Display: Separate aperture at 6 o’clock
Case & Construction
The 40.5 mm 904L stainless steel case case retains the horizontal proportions of the Nautilus. Lateral shoulders which are prominent hint at the porthole construction of the watch, while the case itself integrates well with the large metal end-links of the bracelet.
Milled finishes prevail on the outside, with polished accents adding definition to the case lines. The screw-in crown can be found at 3 o’clock, while the sapphire exhibition caseback allows glimpses of the mechanical movement underneath.
- Case Diameter: 40.5mm, measured from 10 to 4 o’clock
- Case Material: 904L stainless steel
- Case Shape: Nautilus porthole-inspired profile
- Finishing: Brushed surfaces with polished accents
- Crown: Screw-down crown
- Caseback: Sapphire crystal exhibition back
Dial
Silver-grey dial layout is formed by the horizontal pattern of embossed lines, which are typical for Nautilus models. Embossed lines provide a nice three-dimensional effect, but still form a reserved background for calendar and moon phases indications.
Hour indexes are applied baton hour indexes filled with luminescent material, and accompanied by wide baton hour and minutes hands and thin central seconds hand. Day and months windows located under 12 o’clock position counterbalance moon phase indicator, 24 hours scale, and date aperture positioned at 6 o’clock position.
- Dial Color: Silver-grey / light grey
- Dial Texture: Horizontal embossed pattern
- Hour Markers: Applied baton markers
- Luminous Elements: Hour markers and hour/minute hands
- Hands: Baton-style hour and minute hands with central seconds
- Day & Month: Twin apertures at 12 o’clock
- Moon Phase: Lower central display
- 24-Hour Scale: Integrated around the moon-phase display
- Date Window: 6 o’clock
Bezel
Bezel made of 904L grade stainless steel is an extension of the broad rounded octagonal shape of the Nautilus design. The broad, relatively flat bezel lends the watch more horizontal presence than a round dress watch bezel.
A brushed surface on the bezel is a stark contrast to the polished surfaces of its edges and transitions to allow the geometry to stand out as light passes over the bezel. It does not have any decorative scales or exposed bezel screws.
- Material: 904L stainless steel
- Shape: Rounded octagonal
- Top Surface: Fine brushed finish
- Edges: Polished finish
- Bezel Scale: None
- Visible Bezel Screws: None
Strap
A black large-scale alligator leather strap gives the stainless-steel case a more formal character while retaining the broad visual proportions of the Nautilus. Wide metal end links connect the leather directly to the case, preserving the continuous architecture normally associated with an integrated bracelet.
The dark leather provides a restrained contrast to the silver-grey dial and brushed steel case, creating a balanced wearing style that sits between a traditional complication watch and a luxury sports design.
- Material: Alligator leather
- Pattern: Large-scale texture
- Color: Black
- Connection: Wide Nautilus-style metal end links
- Wearing Character: Refined, flexible and sport-dress oriented
Specification Table
| Specification | Details |
|---|---|
| Model | 5726A-001 Replica |
| Movement | Clone Calibre 324 S QA LU 24H |
| Functions | Hours, Minutes, Central Seconds, Day, Month, Date, Moon Phase, 24-Hour Indication |
| Case Diameter | 40.5mm, Measured from 10 to 4 o’clock |
| Case Material | 904L Stainless Steel |
| Dial | Silver-Grey with Horizontal Embossed Pattern |
| Hour Markers | Applied Baton Markers with Luminous Filling |
| Bezel | 904L Stainless Steel, Rounded Octagonal, Brushed Face with Polished Edges |
| Crystal | Sapphire Crystal with Colorless Anti-Reflective Coating |
| Caseback | Sapphire Crystal Exhibition Caseback |
| Strap | Black Large-Scale Alligator Leather Strap with Wide Metal End Links |
| Water Resistance | 30m |
Water Resistance Notice:
Professional pressure test recommended before water exposure. Do not operate crown or pushers underwater.
Questions from the Buyer
1. What complications does the dial have?
This timepiece presents indications for day, month, date, moon phase, and 24-hours scale together with central hour, minute and second hands. Day and month indicators are placed below 12 o’clock, while the moon phase, 24-hour scale and date indicators are positioned at 6 o’clock.
2. Has the dial kept the Nautilus horizontal texture?
Indeed. The silver-greyscale dial presents the typical horizontal embossing design that adds to the dial texture and keeps the characteristic design language of the Nautilus line.
3. How is wearing the watch influenced by the leather strap?
The black alligator leather strap makes the watch more formal than in case with metal bracelet. However, wide steel end pieces create harmony with the case shape.
4. Is it possible to swim or shower with this watch?
The claimed water resistance level is 30 meters. It is highly recommended to test the watch for water resistance professionally before any water exposure. Never adjust the crown and pushers under water.






























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