Strap for HMS1 Dragon

The lug width of the Arnold & Son Royal Collection 1LCAP.B02A.C111A is 20mm. This measurement is determined by the proportions of the 40mm case and represents the distance between the two lugs where the strap is attached. To verify compatibility, always measure the internal space between the lugs with a ruler, positioning it perpendicular to the case diameter.

For the Royal Collection 1LCAP.B02A.C111A, an alligator strap with vegetable tanning represents the most coherent choice with the maison's philosophy. The natural grain of the leather dialogues perfectly with the rose gold case, emphasising the sober elegance of the model. Alternatively, superior quality calf leather with natural patina offers versatility without compromising refinement. The texture and colour of the strap must respect the aesthetic balance already achieved by Arnold & Son's designer.

To change the strap, remove the spring bars that fasten the lug adapters to the case lugs. Use a dedicated spring bar tool to extract the pin without scratching the metal. Once removed, the strap detaches cleanly. Insert the new 20mm strap by aligning the lugs to the case lugs, then reinsert the spring bar until you feel the securing click. It is advisable to perform this operation on a soft surface to protect the rose gold case from potential scratches.

Yes, any 20mm aftermarket strap is mechanically compatible with the 1LCAP.B02A.C111A, provided the lugs are correctly constructed to accommodate the 20mm width. However, aesthetic compatibility requires careful evaluation: the strap must respect the design language of the Royal Collection, avoiding excessive colour, aggressive textures or details that contrast with the model's sobriety. Always select superior quality materials—alligator, shell cordovan, calf leather, or technical cordura—to ensure the strap does not diminish the value of the timepiece.

The lifespan of a leather strap depends on material quality, frequency of use and environmental conditions. Superior quality alligator or vegetable-tanned calf leather maintains structural integrity for 4-6 years of daily wear. The leather develops a natural patina that enhances aesthetic appeal over time. To extend longevity, avoid prolonged exposure to water, humidity and extreme heat. A cordura NATO strap can last 8-10 years, whilst FKM rubber maintains elasticity for 5-7 years. Wearing the strap occasionally rather than daily significantly extends its useful life.