Tissot · PRC 100
Strap for PRC 100 Chronograph Quartz 34.8 Stainless Steel / MOP / Strap
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the PRC 100 T22.1.456.21 (aka: T22145621)
Selected for the 16 mm lug width
The PRC 100 T22.1.456.21 (aka: T22145621), seen from the bench
Frequently asked questions
What is the lug width of the Tissot PRC 100 T22.1.456.21?
The Tissot PRC 100 T22.1.456.21 features a 16mm lug width, a non-standard dimension that reflects the balanced design of the 34.80mm case. This measurement is crucial for acquiring compatible aftermarket straps: any strap must be constructed with lugs specifically calculated for this width, otherwise structural play or mounting impediments may occur.
What is the best strap for the Tissot PRC 100 T22.1.456.21?
Selection depends on usage and personal aesthetics. For sporty elegance: vegetable-tanned calf leather in dark brown or black with steel deployante clasp. For everyday versatility: 2-piece NATO in cotton/polyester, charcoal grey or black. For frequent swimmers: vulcanised FKM rubber. Natural shell cordovan represents the pinnacle for those appreciating leather patination over time. All materials must be mounted with certified 16mm lugs.
How do you change the strap on a Tissot PRC 100?
The strap is removed by extracting the spring bars securing the lugs to the lateral case lugs. Use a dedicated tool (spring bar tool or manual extractor) to gently press the bars from inside outward. Once the strap is free, fit the new one ensuring the lugs slot perfectly into the attachments: with 16mm width, there must be no lateral play. Reinsert the bars with gentle pressure until you feel the locking click.
Is the Tissot PRC 100 T22.1.456.21 compatible with aftermarket straps?
Yes, the model is fully compatible with quality aftermarket straps, provided they are constructed with 16mm lugs. Bespoke leather straps offer significant advantages: leather customisation, colour, clasp type, and texture selection based on individual preference. It is essential to verify that the supplier understands the specificity of 16mm lug width and calculates the attachment points correctly to avoid physical incompatibility.
How long does a leather strap last on the Tissot PRC 100?
Leather strap longevity depends on tanning method and usage. High-quality vegetable-tanned Swiss or French calf typically lasts 3–5 years with daily wear and regular maintenance (cleaning, annual conditioning with neutral creams). Shell cordovan, being denser and more resilient, easily reaches 7–10 years. Prolonged sun exposure, humidity and intense perspiration significantly reduce lifespan. NATO straps and FKM rubber offer superior durability—5 to 15 years—but without the aesthetic and narrative value of structured leather.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

