Strap for Villeret Quantième Annuel GMT Red Gold / Grey

The lug width of the Blancpain Villeret 6670-3642-55 is 22 millimetres. This measurement represents the distance between the two lugs at the case. Any strap designed for this timepiece must be precisely engineered to accommodate this dimension. Always verify compatibility by measuring the space between the lugs before purchasing a replacement strap.

Alligator leather is the most appropriate choice for the Villeret 6670-3642-55, offering consistent grain texture and the ability to develop elegant patina over time. Vegetable-tanned calf presents a more informal yet versatile alternative; shell cordovan provides superior durability whilst maintaining refined construction. Rubber and textile options remain secondary, suited only to occasional wear.

The strap is replaced via spring bars—small tensioned metal pins that connect the strap to the case lugs. Using a dedicated spring bar tool, gently lift one spring bar, remove the old strap, and insert the new one, repositioning the pin. This operation demands precision: on a timepiece of this calibre, professional execution is advisable to prevent case damage.

Yes, provided the strap is specifically engineered for 22mm lug width and constructed from materials consistent with the timepiece: certified alligator, vegetable-tanned calf, or authentic shell cordovan. Premium aftermarket straps, such as those crafted by Casati Milano, deliver aesthetic and durability standards equal to or exceeding OEM options, with greater chromatic flexibility.

A quality leather strap (alligator, calf, or shell cordovan) typically lasts 5–8 years under daily wear, depending on humidity exposure, perspiration, and UV exposure. Alligator resists humid climates better; shell cordovan withstands mechanical wear more effectively. With proper maintenance—periodic application of leather conditioner—lifespan can extend further. Casati Milano guarantees 18 months against manufacturing defects.