Class Sport El Primero Stainless Steel / Black / Bracelet

Zenith · Class

18mm

lug width

Shop 18 mm bands

Lug width: 18 mm
Case diameter: 40 mm
Reference: 03.0510.400/24.M510
Family: Class

Bands that fit

Cut and stitched in Milano, in the width this watch takes.

Millenium Cognac Alligator Strap€195

Matte Blue Alligator Strap€195

Matte Dark Gray Alligator Strap€195

Hammered Calfskin Strap Light Blue€98

Hammered Calfskin Watch Strap Green with Ecru Stitching€98

See every 18 mm band →

Will a strap close on your wrist?

Set for this watch: 40 mm of case and 18 mm between the lugs. Add your wrist and see where a standard strap would close.

Your wrist

Watch length, lug to lug

Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.

Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.

Why ready-made straps come in one length →

Sizing notes

With a 40 mm case on a 18 mm lug width, any 18 mm band fits without adapters.

Made to measure

A band cut for this watchCasati Milano makes one-of-a-kind bands to your watch and wrist, by appointment in Milano.casatimilano.com →

Class Sport El Primero Stainless Steel / Black / Bracelet

Bands that fit

Will a strap close on your wrist?

Sizing notes

Made to measure

Other Class references

Same lug width, other Zenith lines