Strap for Modello Quattro U4S-BRZ-MLL Massena Lab

The lug width of the Modello Quattro U4S-BRZ-MLL is 22mm. This standard represents a proportional balance between elegance and robustness, specific to the 41.5mm case. To verify, measure from the inner wall to the inner wall of the lugs using a digital calliper or ruler. Precision of the lug width is critical: a strap not perfectly calibrated to 22mm will cause structural tension or oscillation on the wrist.

For the Modello Quattro we recommend three options. A vegetable-tanned Tuscan leather (honey vintage or dark brown) enhances the patina evolution of the bronze case; a military NATO (black, navy blue) underscores the tool-watch code and allows quick changes; a structured FKM rubber amplifies functionality without aesthetic compromise. The choice depends on use: leather for formal daily wear, NATO for adventure, rubber for humid environments or water immersion.

The strap is changed by removing the spring bars (elastic bars) that secure the strap to the case lugs. Use a dedicated tool (spring bar remover) to compress the bar and extract it inward. Once the lugs are free, the old strap slides off; insert the new one by aligning the holes with the spring bars and reinsert the bars until the click locks. The operation takes 2-3 minutes and requires no technical expertise.

Yes, provided the lug width is exactly 22mm. The Modello Quattro is compatible with any artisanal or quality strap as long as it respects this dimension. Handcrafted leather, fabric, or rubber straps from specialised brands often offer superior aesthetic performance compared to OEM options, whilst maintaining functionality and ergonomics. Always verify lug width before purchase.

A vegetable-tanned full-grain leather strap typically lasts 2–4 years of daily use, developing a beautiful natural patina. Longevity depends on water exposure, perspiration, and care: clean regularly with a damp cloth, avoid prolonged immersion, occasionally apply natural conditioner. A chrome-tanned calf strap lasts 3–5 years thanks to protective treatment. FKM rubber resists 4–6 years without aesthetic degradation. All straps, with proper maintenance, far exceed the useful life of the watch.