Blancpain · Ladybird

Strap for Ladybird Colors Phases de Lune Red Gold - Diamond / MOP

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter35 mm
Reference3662-2954-55B
FamilyLadybird
MovementBlancpain caliber 1163L Hours, Minutes, Small Seconds | Moonphase
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Ladybird 3662-2954-55B

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Ladybird 3662-2954-55B, seen from the bench

The Blancpain Ladybird 3662-2954-55B in red gold features the Blancpain 1163L automatic movement with hours, minutes, seconds, and full moonphase indication. The 34.90 mm red gold case includes applied gold indices, sapphire caseback, and white lacquered dial with characteristic vertical texture. The 18 mm lug width suits the case proportions and ensures proper strap fit without lateral overhang or wrist pressure.

Frequently asked questions

What is the lug width of the Blancpain Ladybird 3662-2954-55B?

The lug width of the Blancpain Ladybird 3662-2954-55B is 18.00 mm. This dimension is the standard for 34.90 mm cases in Blancpain's feminine models and requires specifically calibrated straps. To verify the measurement, use a digital calliper to measure the distance between the inner edges of both lugs.

Which strap is recommended for the Blancpain Ladybird in red gold?

For a Ladybird 3662-2954-55B in red gold, straps in vegetable-tanned alligator, box calf with patina, or Hungarian shell cordovan are recommended. Tuscan alligator represents the most aesthetically cohesive choice with red gold, whilst shell cordovan ensures superior water resistance and a rich copper-brown patina that develops naturally over time.

How do I change the strap on the Blancpain Ladybird 3662-2954-55B?

Strap replacement requires a dedicated tool (spring bar remover). Position the watch on a soft surface, insert the flat blade of the tool into the lug slot, apply gentle pressure to release the internal spring, and slide out the old strap. Install the new one by aligning the holes with the lugs and pressing until you hear an audible click. Alternatively, Casati Milano offers strap-changing service at the atelier.

Can I use aftermarket straps compatible with the Blancpain Ladybird?

Yes, any strap with an 18 mm lug width is mechanically compatible with the Blancpain Ladybird 3662-2954-55B. However, construction quality varies significantly between manufacturers. Artisanal straps featuring vegetable-tanned leather, natural rubber inner padding, and straight stitching offer superior durability and aesthetically superior ageing compared to industrial alternatives.

How long does a leather strap last on the Blancpain Ladybird?

Durability depends on leather quality and usage conditions. A high-quality alligator or shell cordovan strap, subject to regular maintenance (damp cloth cleaning, annual conditioning with neutral wax), guarantees 4-6 years of daily wear before reconditioning is required. Stress zones (lug area, buckle) age faster than the remainder of the leather. Casati Milano offers an 18-month warranty on manufacturing defects.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only