Castagna

Ref. 1009-A

Case diameter: 38 mm; Manufacturer spec
Lug-to-lug: 46 mm; Manufacturer spec
Thickness: 12 mm; Manufacturer spec
Lug width: 20 mm; Manufacturer spec

Retail price $713 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 46 mm

How the Castagna wears

Its lugs add 8 mm to the 38 mm case, close to the 7 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.5" to 7.75" (16.5–19.7 cm); below 6.5" the lugs start to reach the edge of the wrist.

At 12 mm thick it is slimmer than 95% of the 40 other chronograph watches we've measured, so it slides under a cuff more easily than most.

Its 20 mm lug width is one of the most common strap sizes; 156 other watches here share it, so aftermarket straps are easy to find.

Will the Castagna fit your wrist?

With a 46 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

Wrist	Flat width (est.)	Fit
6"	47.2 mm	Snug, lugs near the edge
6.5"	51.2 mm	Ideal fit
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Ideal fit
8"	63 mm	Wears small

Specifications

Reference: 1009-A
Collection: Mechaquartz
Status: In production
Introduced: 2021
Case material: 316L stainless steel
Crystal: sapphire, AR and anti-fingerprint coated
Water resistance: 50 m
Bezel: none
Dial: cream/brown (Castagna)
Strap / bracelet: Italian/French leather strap, 20mm to 16mm
Style: Chronograph, Dress

Movement

Caliber: Seiko Instruments (SII) VK64
Type: quartz

Takes 20 mm straps. See other 20 mm watches and straps.

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 20 mm lug width

All 20 mm watches

These take the same straps as the Castagna.