DiaStar Original 60-Year Anniversary Edition

Ref. R12163118

Case diameter: 38 mm; Manufacturer spec
Lug-to-lug: 45 mm; Measured in a published review
Thickness: 12.3 mm; Manufacturer spec
Lug width: 20 mm; Measured in a published review

Retail price $2,300 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 45 mm

How the DiaStar Original 60-Year Anniversary Edition wears

Its lugs add 7 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 6.25" to 7.5" (15.9–19.1 cm); below 6.25" the lugs start to reach the edge of the wrist.

At 12.3 mm thick it is thicker than 79% of the 101 other everyday watches we've measured, so expect it to sit tall on the wrist.

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 DiaStar Original 60-Year Anniversary Edition fit your wrist?

With a 45 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: R12163118
Collection: DiaStar
Status: In production
Introduced: 2022
Case material: Ceramos and stainless steel
Crystal: sapphire (faceted)
Water resistance: 100 m
Dial: grey
Strap / bracelet: steel Milanese mesh bracelet plus grey textile strap (EasyClip)
Weight: 126 g
Style: Everyday

Movement

Caliber: Rado R764
Type: automatic
Power reserve: 80 hours
Jewels: 25

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 DiaStar Original 60-Year Anniversary Edition.