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FP Journe · Octa

Strap for Octa Quantième Perpétuel 42 Rose Gold / Grey / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
20 mm strapsAll FP Journe
Lug width20 mm
Case diameter42 mm
Reference1300.3 QP42 RG GR BR
FamilyOcta
MovementFP Journe caliber 1300.3 QP Hours, Minutes, Small Seconds | Big Date | Moonphase | Power Reserve Indicator
CaseRose Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

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Straps for the Octa 1300.3 QP42 RG GR BR

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Octa 1300.3 QP42 RG GR BR, seen from the bench

The FP Journe Octa 1300.3 QP42 RG GR BR is an automatic perpetual calendar watch featuring a horizontal caliber of just 4mm thickness housed in a 42mm rose gold case. The stratified dial displays hours, minutes, small seconds, large date window, moonphase, and power reserve indicator. The case is approximately 10.7mm thick with a sapphire caseback revealing hand-finished components including pyramid rivets and satin surfaces. The 20mm lug width ensures compatibility with a wide range of straps for standard male wrists.

Frequently asked questions

What is the lug width of the FP Journe Octa 1300.3 QP42 RG GR BR?

The lug width of this reference is precisely 20mm. It is measured between the inner pins of the case lugs using a digital calliper. This dimension determines which third-party straps are compatible with your watch.

What is the best strap for the FP Journe Octa 1300.3 QP42 RG GR BR?

For this rose gold reference, we recommend a dark brown (mahogany) alligator with fine grain, which reflects the understated elegance of the case. Alternatively, vegetable-tanned calf leather in burgundy develops a rich patina over time. FKM rubber in anthracite offers daily versatility, whilst a linen NATO in cream appeals to collectors seeking contemporary flexibility.

How do you change the strap on an FP Journe watch?

Strap replacement requires a small spring bar tool. Position the tool against the spring pin on one side of the lug, compress gently to release the pin, and slide the old strap away. Repeat on the opposite side. To install the new strap, reverse the process: slide in and compress the pin until it seats fully. If unfamiliar, consult a trusted watchmaker.

Are aftermarket straps compatible with the FP Journe Octa 1300.3 QP42 RG GR BR?

Yes, provided they feature a 20mm lug width. Artisanal straps crafted from alligator leather, vegetable-tanned calf, cordovan or technical fabrics are fully compatible and allow you to vary the watch's aesthetic. Milano Straps offers a curated selection of customisable 20mm straps.

How long does a leather strap last on a watch like the Octa?

Lifespan depends on the tanning method and frequency of wear. Vegetable-tanned calf typically lasts 2–4 years of daily use; quality alligator 3–5 years; cordovan up to 8–10 years. Vegetable-tanned leather develops character patina over time. Proper maintenance—drying after moisture exposure, gentle cleaning—significantly extends useful life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only