Strap for Parallax Tourbillon

The Grönefeld Parallax Tourbillon Parallax RG features a lug width of 19 mm. This dimension is the fundamental parameter for selecting a compatible strap. It is measured as the net distance between the centres of the spring bar pins that protrude laterally from the case. A 19 mm strap fits precisely into the case, ensuring stability and protecting the integrity of the pins during daily wear.

For the Parallax RG in rose gold, alligator with vegetable tanning represents the most harmonious choice: the natural grain dialogues with the warmth of gold, and the patina that develops over time echoes that of the case. Shell cordovan offers an intimate and durable alternative, keeping the masterpiece at the centre of attention. For formal versatility, a cognac brown in vegetable-tanned calf is versatile and robust. A NATO in neutral tones (stone grey, navy blue) permits sporting practicality without aesthetic compromise.

To change the 19 mm strap on the Parallax RG, a specific tool is required: a spring bar tool. Position the flat tip of the tool under the spring bar pin, apply light pressure outward to release the retention mechanism, and the pin will retract allowing bar removal. Repeat on both sides. Insert the pins into the holes of the new 19 mm strap, align them with the case pins, and press gently until they click into position. Verify that the strap is symmetrical and that the pins are fully inserted.

Yes, any strap with a certified 19 mm lug width is compatible with the Parallax RG. However, construction quality varies significantly: artisanal straps with reinforced lugs and hand-stitching guarantee superior longevity and stability compared to mass-produced straps. It is advisable to select straps with brass or stainless steel rings, and with leather thickness between 1.4 and 1.6 mm to maintain balanced proportions with the 43 mm case. Avoid straps with fragile or poorly-shaped lugs, which could pose risks of watch loss.

The lifespan of a leather strap depends on material, tanning method, and usage. Alligator or shell cordovan with vegetable tanning, worn daily but with appropriate care, maintains structural integrity for 5–7 years. Vegetable-tanned calf has slightly lower durability, approximately 4–6 years. The leather softens and develops natural patina, becoming more flexible and comfortable. To extend longevity, avoid prolonged exposure to direct moisture, dry gently after water contact, and store in a climate-controlled environment. A seal with natural wax applied annually protects against accelerated ageing. When stitching begins to fail or leather visibly thins, strap replacement is advisable.