Rolex · Datejust

Strap for Rolex Datejust 16203

The Rolex Datejust 16203 takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

  • 4.8 out of 5 · 269 reviews
  • Ships in 1–3 working days
  • Worldwide shipping
  • 30-day returns
  • 12-month warranty on manufacturing defects
  • Hand-stitched in Milan
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Lug width20 mm
Case diameter36 mm
Reference16203
FamilyDatejust
MovementRolex caliber 3135
Year1988–2005
CaseStainless Steel and 18k Yellow Gold
CrystalSapphire
BezelFluted 18k Yellow Gold
Water resistance100m

Recommended spring bar

Spring bars Rolex Day-Date 18038 yellow gold — 20mm

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm · closed lugs

All Rolex spring barsOpen →
Rolex Datejust 16203 — watch

Your watch with our straps

Datejust 16203 with Grand Cavalier Leather Strap Orange
Datejust 16203 with Vintage Brown Calfskin Strap — Natural Patina
Datejust 16203 with Brown Italian Leather Strap

Calf, Orange

Grand Cavalier Leather Strap Orange

€120

★ 4.9 · 12

1 / 86

Real photos of the strap and the case. No generated images.

What length do I need?

Measure your wrist with a tailor's tape or a piece of string, comfortably snug.

Wrist circumferenceLength (long side / short side)
15.0–16.4 cm110 / 70 mm
16.5–17.8 cm115 / 75 mm
17.9–19.0 cm120 / 80 mm
19.1–20.4 cm125 / 80 mm
20.5–21.6 cm130 / 85 mm
21.7–22.9 cm135 / 85 mm
over 22.9 cmon request

The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.

What I'm asked about the Rolex Datejust 16203

What strap size does the Rolex Datejust 16203 take?

The Rolex Datejust 16203 needs 20 mm between the lugs. It's the size I've been fitting on it for years.

Can the strap on the Rolex Datejust 16203 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Rolex Datejust 16203?

Yes, in 20 mm leather. On a 36 mm case a calf strap works every day; if you want something more, alligator.

Which strap do you recommend for the Rolex Datejust 16203?

A 20 mm calf strap, for every day. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

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

Bespoke straps for Rolex, in the atelier or by video call: casatimilano.com

Updated on · by Antonio Zichichi