Arnold & Son · Royal Collection

Strap for Hornet World Timer

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

Lug width20 mm
Case diameter47 mm
Reference1H6AP.B06A.C60B
FamilyRoyal Collection
MovementArnold & Son caliber A1766 EOT hours, minutes, Additional 24 hours Hand (adjustable), world time | big date, month | Equation of time, Solar time
CaseRose Gold

Spring bar

Swiss Standard universal spring bars

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

Straps for the Royal Collection 1H6AP.B06A.C60B

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Royal Collection 1H6AP.B06A.C60B, seen from the bench

The Arnold & Son Royal Collection features the A1766 EOT caliber with functions for hours, minutes, 24-hour indicator, and world time. The watch integrates a large date, month, and equation of time display showing the difference between mean solar time and apparent solar time.

Frequently asked questions

What is the lug width of the Arnold & Son Royal Collection 1H6AP.B06A.C60B?

The lug width of the Arnold & Son Royal Collection 1H6AP.B06A.C60B is 20 millimetres. This measurement represents the internal distance between the case spring bars and allows the use of all artisanal watch straps compatible with this standard dimension. To verify correct installation, simply position the strap on the case and ensure that the spring bars fit perfectly into the lateral guides of the case.

Which strap is most suitable for the Arnold & Son 1H6AP.B06A.C60B in rose gold?

For a rose gold timepiece such as the 1H6AP.B06A.C60B, we recommend an alligator or vegetable-tanned calf leather in shades of brown, mocha, taupe, or burgundy. Alligator dyed in these colours emphasises the formal elegance of the Royal collection and dialogues naturally with the warmth of rose gold. Alternatively, an FKM rubber in grey or black maintains the instrument character of the watch with practical everyday use. A deployant clasp in satin rose gold completes the aesthetic harmony.

How do you change the strap on a 47mm Arnold & Son timepiece?

To change the strap on an Arnold & Son 1H6AP.B06A.C60B 47-millimetre watch, procure a spring bar tool kit (typically a double-ended thin lever). Position the watch on a flat, covered surface. Insert the tool at the small lateral slot of the spring bar (visible from the bottom of the lug). Apply gentle inward pressure until the spring bar releases, then remove the strap. Repeat the operation on the other side. Install the new strap by aligning the spring bars with the case guides and press until the click locks. Verify that the strap is fully secured before wearing the watch.

Is a quality aftermarket strap compatible with the 1H6AP.B06A.C60B?

Absolutely. Any artisanal strap manufactured with a 20-millimetre lug width is perfectly compatible with the 1H6AP.B06A.C60B. Quality aftermarket straps do not damage the case and represent an opportunity to personalise your timepiece according to usage context or aesthetic preference. We recommend straps constructed from alligator, vegetable-tanned calf, shell cordovan or technical rubbers, preferably with artisanal finishes that reflect the construction standard of the Arnold & Son.

What is the average lifespan of a leather strap for the 1H6AP.B06A.C60B?

The lifespan of a leather strap depends on intensity of use, climatic conditions and the type of leather. A quality artisanal alligator or calf strap on a daily-worn watch typically lasts between 3 and 5 years. A shell cordovan strap, thanks to its superior density, can reach 7 to 8 years of effective use. NATO straps and technical rubber have similar or superior durations. To extend the strap's lifespan, avoid prolonged moisture exposure, do not force the spring bars during replacement operations and perform periodic cleaning with a soft cloth dampened with warm water.

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.

Request an appointment →

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