Aureum — Swiss Made Modular Watch with Metal Link Straps

A watch defined by its metal — clean, sophisticated, and quietly architectural, with interchangeable link straps that shift the watch between silver and black in seconds.

Why It Exists

• Swiss Made with Ronda 762 or 702 movement and K1 sapphire-coated glass
• Interchangeable metal link straps — silver and black included (in the matching width for the case size chosen)
• 24mm case with 12mm straps, or 36mm case with 20mm straps — both fully interchangeable within the modular system
• Tool-free strap swaps between metallic finishes
• Individually numbered, small-batch Swiss production with certificate and 24-month warranty

The Watch

Defined by Metal. Designed with Restraint. Aureum is the metal expression of the modular system — a watch where the link strap is not an accessory but the defining element. The aesthetic is clean, architectural, and confident without ornament.

Two Finishes. A Different Character. Christopher Butendorff built the modular system so that a watch could change with the person wearing it. Aureum applies that principle to metal — two link straps, silver and black, each shifting the watch's character without changing the head. A broken strap should not ruin a timepiece you love, and a change of finish should not require a second watch. Time should never limit your style. Your watch should not either.

Swiss Made. Crafted in Metal. Each Aureum is Swiss Made, powered by a Ronda 762 movement, and finished with K1 sapphire-coated glass. The case is available in 24mm and 36mm — the 24mm with a 12mm band width, the 36mm with a 20mm band width. Two metal link straps are included — silver and black, in the matching width for the case size chosen — chosen for their range across contemporary and understated aesthetics. Every watch is individually numbered and produced in small batches in Switzerland, arriving with a certificate of authenticity and a 24-month international warranty. Production takes nine to twelve months. That is how long Swiss made-to-order takes, and Aureum is no exception.

The Expressions Changes. The Timepiece Remains. Aureum is built on the modular system. The watch head releases from the link strap by hand, and the two included metal straps are a beginning — any compatible strap in the collection fits, 12mm straps for the 24mm case, 20mm straps for the 36mm case, whether metal link, leather, or PVC. A silver link for the office, a black link for the evening, a leather strap for the weekend. The watch stays the same. The expression changes.

Make Aureum Your Own. Aureum is made to order and individually numbered — created for those who appreciate the permanence of metal without being limited to a single expression. Silver brings a timeless, understated character. Black creates a sharper, more contemporary presence. Two distinct expressions, built around the same individually numbered timepiece.

Choose the finish that defines the moment. Change it when the moment changes. Keep the timepiece at the centre of them both.

Specifications

Manufacturing & Delivery

Made to order in Switzerland

Every Christopher Butendorff watch is made to order and produced in Switzerland. From the moment your order is confirmed, production takes approximately 9 to 12 months.

That timeline is deliberate. Each watch is handmade, assembled, and quality-checked by Swiss watchmakers, then finished and individually numbered as part of a limited edition. We produce in small batches rather than at scale — the process is closer to commissioning a piece than buying one off a shelf.

What happens in that time:

• Case machining, finishing, and assembly
• Movement installation and regulation
• Hand assembly and quality control
• Individual numbering and certificate preparation

When your watch is ready, it ships with a certificate of authenticity and a 24-month international warranty covering manufacturing defects.

Returns: Unused watches in original condition and packaging may be returned within 30 days. Because each piece is made to order, we encourage you to reach out with any questions before purchasing.

Frequently Asked Questions

What metal are the link straps made from?

The link straps are crafted from stainless steel, available in silver and black finishes.

Can I pair Aureum with leather or PVC straps?

Yes. Any compatible strap in the collection fits — 12mm straps for the 24mm case, 20mm straps for the 36mm case — whether metal link, leather, or PVC, swapped by hand without tools.

What do the case sizes refer to?

The numbers — 24mm, 36mm, and 42mm — refer to the watch head (the case that holds the dial and movement), not to wrist size. These are the available case sizes across the collection. A smaller case offers a more understated presence on the wrist; a larger case makes a stronger statement. Choose the case size that matches how you want the watch to look and wear. Aureum is available in 24mm and 36mm.