Strap for Lange 1 Tourbillon Perpetual Calendar Platinum

The lug width of the 720.025 is 22 mm. This measurement represents the perpendicular distance between the two inner lugs of the case. To verify it correctly, place a measuring tape between the internal slots where the strap sits, measured from ear to ear without compression. The 22 mm width is the horology standard for mid-sized cases with a diameter around 40–42 mm.

For the 720.025, the ideal choice is a Nile alligator strap with vegetable tanning, which enhances warm golden tones and creates a harmonious texture contrast with the satin-finished platinum case. An equally valid alternative is shell cordovan, offering superior density and inherent luminosity. For daily wear, vegetable-tanned calf leather in deep shades (mahogany, aged cognac) combines refinement with visible grain structure. A silk-weave canvas NATO strap remains suitable for informal and travel situations.

Changing the strap on the 720.025 requires a careful procedure to protect the platinum case. Use a spring bar removal tool with a non-abrasive tip. Position the watch on a soft, stable surface. Insert the tool into the lower slot of the lug, apply gentle and steady pressure to release the spring bar, then extract the strap. Repeat for the second lug. When remounting, align the new strap's holes with the case slots and press the spring bar until it clicks. If inexperienced, entrust the task to a specialist watchmaker: platinum is relatively fragile against impact.

Yes, you may fit an aftermarket strap of quality provided the lug width is exactly 22 mm. Milano Straps offers a selection of artisanal bespoke straps in fine leathers: alligator, shell cordovan, vegetable-tanned calf, with custom-shaped cuts and finishes that respect the high aesthetic standard of the 720.025. We recommend avoiding mediocre-quality straps, which would neither honour the watch nor protect the lugs from frequent wear.

Longevity depends on material, usage, and maintenance. An alligator or shell cordovan strap, both very dense leathers, maintains structural integrity for 5–7 years with daily use and proper care (protection from excessive perspiration, gentle drying). Vegetable-tanned calf leather has slightly shorter durability, 3–5 years. Periodically condition the leather with specific non-oily products. Rotate straps if you own multiple options, reducing concentrated wear. Vegetable tanning develops a beautiful patina over time, a sign of authenticity: the strap ages with dignity, rather than deteriorating abruptly.