Ralph Lauren · Sporting

Strap for Sporting 45mm World Time Steel / Blue

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

Lug width20 mm
Case diameter45 mm
ReferenceRLR0210700
FamilySporting
MovementRalph Lauren caliber RL939 Hours, Minutes, Seconds, World Time, Additional 24 Hour Hand (adjustable), Day / Night Indication | Date | Power Reserve Indicator
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Sporting RLR0210700

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Sporting RLR0210700, seen from the bench

The Ralph Lauren Sporting RLR0210700 is a 44.80mm stainless steel timepiece featuring the Ralph Lauren RL939 movement with GMT function, day/night indicator, date, and power reserve display. The 20mm lug width provides proportional balance with the case diameter, offering a refined sports watch that combines technical complexity with daily wearability.

Frequently asked questions

What is the exact lug width of the Ralph Lauren Sporting RLR0210700?

The Ralph Lauren Sporting RLR0210700 features a 20mm lug width. This measurement is calculated by measuring the space between the case lugs and allows you to order a compatible aftermarket strap with precision. Always verify the measurement by inserting a ruler between the attachment pins before making a purchase.

Which strap material is best suited for the Ralph Lauren Sporting RLR0210700?

This depends on your primary use. Mississippi alligator or Italian calf leather with vegetable tanning emphasise the sports-elegant character of the model; NATO in polyamide with steel deployant is ideal for dynamic or marine environments; textured synthetic rubber ensures maximum practicality and chemical resistance. We recommend choosing based on your predominant wearing context.

How do you change a strap on a watch with 20mm lugs?

Remove the original strap using a spring bar tool. Position the tool beneath the elastic ring of the pin to push downward, releasing the pin from the case seat. Insert the new strap by aligning the pin with the attachment seats and press until the locking click engages. Ensure the pin is completely inserted and secured before wearing the watch.

Is an aftermarket strap from a different brand compatible with the Ralph Lauren Sporting RLR0210700?

Yes, provided the strap has a certified 20mm lug width. The attachment pins are standardised, so any quality-constructed strap on this width will fit perfectly. We recommend verifying the technical specifications provided by the manufacturer and selecting materials that respect the construction quality of the watch.

How long does a genuine leather strap last on a sports watch like the Ralph Lauren Sporting RLR0210700?

A quality leather strap, subjected to daily wear, has an average lifespan of 3-5 years. Durability depends on external factors: moisture exposure, washing frequency, intensity of use. Vegetable tanning, in particular, develops a natural patina and can extend perceived aesthetic value even beyond functional lifespan. We recommend alternating multiple straps to extend overall durability.

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