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TAG Heuer · Alter Ego

Strap for Alter Ego Stainless Steel / Silver

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

20mm
20 mm strapsAll TAG Heuer
Lug width20 mm
Case diameter29 mm
ReferenceWP1315.BA0751
FamilyAlter Ego
MovementETA caliber 956.112 hours, minutes, seconds | date
Year1999
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Alter Ego WP1315.BA0751

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Alter Ego WP1315.BA0751, seen from the bench

The TAG Heuer Alter Ego WP1315.BA0751 is a women's sports watch from the late 1990s featuring a 29mm stainless steel case with polished and brushed details. It houses the reliable ETA 956.112 movement displaying hours, minutes, seconds and date. The integrated steel bracelet creates a sculptural aesthetic on the wrist. This 20mm lug width model represents a classic example of balanced proportions designed for smaller wrists or those preferring compact timepieces.

Frequently asked questions

What is the lug width of the TAG Heuer Alter Ego WP1315.BA0751?

The lug width of the TAG Heuer Alter Ego WP1315.BA0751 is 20 millimetres. This measurement indicates the space between the case lugs and determines the compatibility of any aftermarket strap. Do not confuse this with the case diameter (29mm): lug width is the critical parameter for ordering a correctly fitting strap for this model.

Which strap best suits the TAG Heuer Alter Ego WP1315.BA0751?

Black alligator or vegetable-tanned calf leather represent the most refined choices for the WP1315.BA0751. Alligator enhances the stainless steel's lustre whilst maintaining timeless elegance, ideal for formal occasions. Vegetable-tanned calf develops a natural patina over time, imparting authenticity and character. For everyday versatility, structured rubber in black or navy blue offers practicality without compromising aesthetics.

How do you change the strap on a TAG Heuer Alter Ego WP1315.BA0751?

Strap replacement requires a spring bar tool. Grasp the side lugs with the tool and apply gentle pressure to extract the spring bar from its housing, then remove the old strap. Insert the bar into the new strap and secure it in the case lugs with even pressure until you feel the locking click. Alternatively, Casati Milano's atelier provides changing services at reduced rates for clients ordering bespoke straps.

Is an aftermarket strap compatible with the TAG Heuer Alter Ego WP1315.BA0751?

Yes, provided the strap has a 20-millimetre lug width. Any 20mm strap will fit correctly into the Alter Ego's spring bars. Always verify the specification before purchase. On milanostraps.it, you will find the complete 20mm strap collection, selected for compatibility and artisanal quality, with bespoke customisation available through Casati Milano's atelier.

How long does a leather strap last on a TAG Heuer Alter Ego WP1315.BA0751?

Durability depends on material, usage, and maintenance. An alligator or shell cordovan strap, with ordinary care, maintains functionality and aesthetics for 5–7 years; the patina evolves, lending character. A vegetable-tanned calf strap, subjected to moderate wear, lasts 3–5 years before replacement becomes necessary. Rubber, being more resistant to wear, can last 5–8 years. Store the strap away from excessive moisture and direct sunlight to maximise longevity.

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