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Description
DIWF Modified Rolex Daytona IRBIS Quartz Fiber 41mm
A technically impressive execution of the DiW modification, pairing the robust 4130 clone caliber with a meticulously machined 55.8g quartz fiber chassis.
Powered by the 4130 Clone Caliber
The driving force behind this modified piece is the established 4130 clone movement, widely recognized as one of the most reliable chronograph calibers in the replica industry. By utilizing this movement rather than a modular alternative, DIWF ensures that the subdials function exactly as intended, with a crisp engagement on the chronograph pushers. The column-wheel architecture provides a smooth sweep for the central seconds hand, while the free-sprung balance wheel clone allows for stable regulation over time.
This specific 4130 clone caliber is typically regulated at the factory to operate within ±5–8 seconds per day, offering highly dependable daily performance for a mechanical chronograph.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: 12-hour chronograph, 30-minute counter, running small seconds
- ✅ Winding Direction: Bidirectional automatic winding
Technical Specifications
The case is milled entirely from layered quartz fiber, achieving an incredibly light 55.8g total weight while maintaining the historically accurate 12.1mm thickness profile of the reference.
Features the signature DiW textured finish with sharp subdial printing and correctly applied Chromalight indices. The dark green accent tones are accurately color-matched to the custom genuine counterpart.
The tachymeter scale is deeply engraved into the composite material, with hand-chamfered edges that seamlessly transition into the mid-case.
A high-density nylon velcro strap provides a secure and highly adjustable fit, complementing the ultra-lightweight nature of the watch head.
Why DIWF for This Reference?
Many collectors ask: “Why not standard Clean Factory for a Daytona?”
While Clean Factory remains the benchmark for standard 904L Oystersteel models, DIWF specializes exclusively in custom composite builds. Cheaper modifying factories often rely on the thicker 7750 movement, resulting in disproportionate 15mm+ case thicknesses. DIWF successfully integrates the slim 4130 caliber into their quartz fiber chassis, retaining the exact 12.1mm thickness of a genuine 116500 while achieving the target 55.8g weight.
Full Disclosure: Due to the extreme 55.8g lightweight nature of the quartz fiber casing, the rotor noise from the automatic movement is slightly more audible than it would be in a dense stainless steel case.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | Daytona IRBIS DiW Modification |
| FACTORY / VERSION | DIWF Edition |
| MOVEMENT | 4130 Clone Caliber |
| CASE MATERIAL | Quartz Fiber Composite |
| WEIGHT & THICKNESS | 55.8g | 12.1mm |
| CRYSTAL & LUME | Sapphire with AR | Chromalight |
| DIMENSIONS | 41mm × 46.5mm × 12.1mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | 30m — professional pressure test recommended before swimming |
Collector Q&A
Q: Is the chronograph fully functional on this DIWF modification?
A: Yes. Because DIWF utilizes the 4130 clone movement rather than a decorative caliber, the 12-hour counter, 30-minute counter, and central sweeping chronograph seconds hand function exactly as they do on a standard mechanical Daytona.
Q: How does the quartz fiber case hold up to daily wear?
A: Quartz fiber is highly resilient to standard impacts and offers excellent scratch resistance compared to polished steel. Its primary advantage is the dramatic reduction in mass, allowing this piece to weigh just 55.8g.
Q: Are the case dimensions accurate despite the custom materials?
A: Yes. One of the main reasons DIWF is preferred for this build is their ability to maintain the exact 41mm diameter and an impressively slim 12.1mm thickness, identical to the standard 116500 profile.
Q: What is the main known quirk of the DIWF IRBIS edition?
A: Due to the extreme 55.8g lightweight nature of the quartz fiber casing and the lack of dense metal to insulate sound, the rotor noise from the automatic winding mechanism is slightly more audible than it is in a standard 904L Oystersteel case.
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