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Tissot · Bellflower

Strap for Bellflower Square Yellow Gold / Black / Bracelet

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

Lug width

18mm
18 mm strapsAll Tissot
Lug width18 mm
Case diameter19 mm
ReferenceT73.3.321.51 (aka: T73332151)
FamilyBellflower
MovementETA caliber 976.001 Hours, Minutes

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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The Bellflower T73.3.321.51 (aka: T73332151), seen from the bench

The Tissot Bellflower T73.3.321.51 is a Swiss women's timepiece featuring a 19mm steel case with an 18mm lug width and integrated direct-lug attachment. Powered by an ETA caliber 976.001 quartz movement, it delivers reliable timekeeping without mechanical complications. The design emphasizes geometric proportions and constructive simplicity, with a mineral crystal dial that maintains legibility through understated aesthetics. The 18mm strap width corresponds precisely to the case proportions, allowing aftermarket straps of this size to fit with the same accuracy as the original bracelet.

Frequently asked questions

What is the exact lug width of the Tissot Bellflower T73.3.321.51?

The Tissot Bellflower T73.3.321.51 features an 18-millimetre lug width, measured from the inner point of one lug to the inner point of the other. This specification ensures compatibility with any standard 18mm strap without modifications or compromises to construction integrity.

Which strap material do you recommend for this Tissot model?

For the Bellflower T73.3.321.51 we recommend vegetable-tanned alligator for formal elegance, vegetable-tanned calf for daily versatility with natural patina development, cotton NATO for sports functionality, and FKM rubber for aquatic environments. Choice depends on use case and personal aesthetic preference.

How do I change the strap on the Tissot Bellflower T73.3.321.51?

The Bellflower utilises standard removable lugs. Using a spring bar tool, gently lift the retention spring on the horizontal pins. Extract the pin from the lug, remove the old strap and insert the new one by aligning the holes with the pins. Ensure the spring is properly positioned before closing.

Which aftermarket straps are compatible with the Tissot Bellflower T73.3.321.51?

All straps in 18mm format are compatible with the Bellflower T73.3.321.51. On milanostraps.it you'll find a curated selection of artisanal straps in Italian leather, NATO, rubber and specialty variants crafted bespoke for this specific lug width.

What is the average lifespan of a leather strap for this Tissot?

A high-quality leather strap with vegetable tanning lasts 3-5 years under normal daily use conditions. Longevity depends on leather type (alligator typically outlasts calf), humidity exposure frequency and daily wear hours. Natural patina development is a positive sign of ageing.

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