Omega Watch Dimensions: Diameter, Thickness, Lug-to-Lug

Wrist fit is a function of four numbers: diameter (the dial-side measure), thickness (how much the case sits off the wrist), lug-to-lug (the most important fit dimension), and lug width (the strap or bracelet endlink size). Bracelet taper is the difference between lug width and clasp end. The Speedmaster Pro and Seamaster Diver 300M are the two reference points buyers usually compare against.

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Family	Model	Reference	Diameter	Thickness	Lug-to-Lug	Lug Width	Bracelet Taper	Water	Movement
Speedmaster	Speedmaster Professional Moonwatch	310.30.42.50.01.001	42 mm	13.2 mm	47.5 mm	19 mm	19 → 16 mm	50 m	Cal. 3861
Speedmaster	Speedmaster Moonwatch (Sapphire)	310.30.42.50.01.002	42 mm	13.6 mm	47.5 mm	19 mm	19 → 16 mm	50 m	Cal. 3861
Speedmaster	Speedmaster Calibre 321 (Ed White)	311.30.40.30.01.001	39.7 mm	14.4 mm	47.0 mm	19 mm	19 → 16 mm	50 m	Cal. 321
Speedmaster	Speedmaster First Omega in Space	311.32.40.30.01.001	39.7 mm	13.5 mm	47.0 mm	19 mm	19 → 16 mm	50 m	Cal. 1861
Speedmaster	Speedmaster '57 Chronograph 40.5	332.10.41.51.02.001	40.5 mm	12.99 mm	46.0 mm	20 mm	20 → 16 mm	50 m	Cal. 9906
Speedmaster	Speedmaster Chronoscope 43	329.30.43.51.10.001	43 mm	13.85 mm	50.0 mm	21 mm	21 → 18 mm	50 m	Cal. 9908
Speedmaster	Speedmaster Racing	329.30.44.51.06.001	44.25 mm	14.9 mm	50.0 mm	21 mm	21 → 18 mm	50 m	Cal. 9900
Speedmaster	Speedmaster Dark Side of the Moon	311.92.44.51.01.007	44.25 mm	16.3 mm	50.0 mm	21 mm	21 → 18 mm	50 m	Cal. 9300
Speedmaster	Speedmaster Grey Side of the Moon	311.93.44.51.99.002	44.25 mm	16.3 mm	50.0 mm	21 mm	21 → 18 mm	50 m	Cal. 9300
Speedmaster	Speedmaster White Side of the Moon	311.93.44.51.04.002	44.25 mm	16.3 mm	50.0 mm	21 mm	21 → 18 mm	50 m	Cal. 9300
Speedmaster	Speedmaster Silver Snoopy Award 50th	310.32.42.50.02.001	42 mm	14.06 mm	47.5 mm	20 mm	20 → 16 mm	50 m	Cal. 3861
Speedmaster	Speedmaster Apollo 11 Moonshine Gold	310.60.42.50.10.001	42 mm	13.2 mm	47.5 mm	19 mm	19 → 16 mm	50 m	Cal. 3861
Speedmaster	Speedmaster Moonshine Gold Green Dial	310.60.42.50.10.002	42 mm	13.2 mm	47.5 mm	19 mm	19 → 16 mm	50 m	Cal. 3861
Speedmaster	Speedmaster Two Counters	332.32.41.51.01.001	40.5 mm	13.85 mm	46.0 mm	20 mm	20 → 16 mm	50 m	Cal. 9906
Seamaster	Seamaster Diver 300M 42	210.30.42.20.01.001	42 mm	13.6 mm	49.0 mm	20 mm	20 → 18 mm	300 m	Cal. 8800
Seamaster	Seamaster Diver 300M Chronograph	210.30.44.51.01.001	44 mm	16.7 mm	52.0 mm	21 mm	21 → 18 mm	300 m	Cal. 9900
Seamaster	Seamaster 300	234.30.41.21.01.001	41 mm	13.85 mm	48.0 mm	19 mm	19 → 16 mm	300 m	Cal. 8912
Seamaster	Seamaster 300 Heritage 60 Years	234.30.41.21.02.002	41 mm	13.85 mm	48.0 mm	19 mm	19 → 16 mm	300 m	Cal. 8912
Seamaster	Seamaster Aqua Terra 30	220.10.30.20.06.001	30 mm	10.5 mm	37.0 mm	15 mm	15 → 12 mm	150 m	Cal. 8800
Seamaster	Seamaster Aqua Terra 34	220.10.34.20.02.001	34 mm	12.2 mm	42.0 mm	17 mm	17 → 14 mm	150 m	Cal. 8800
Seamaster	Seamaster Aqua Terra 38	220.10.38.20.06.001	38 mm	13.2 mm	45.0 mm	19 mm	19 → 16 mm	150 m	Cal. 8800
Seamaster	Seamaster Aqua Terra 41	220.10.41.21.10.001	41 mm	13.7 mm	48.0 mm	20 mm	20 → 16 mm	150 m	Cal. 8900
Seamaster	Seamaster Aqua Terra Worldtimer	220.10.43.22.03.001	43 mm	14.7 mm	50.0 mm	21 mm	21 → 18 mm	150 m	Cal. 8938
Seamaster	Seamaster Aqua Terra GMT 43	220.10.43.22.01.001	43 mm	14.7 mm	50.0 mm	21 mm	21 → 18 mm	150 m	Cal. 8906
Seamaster	Seamaster Planet Ocean 39.5	215.33.40.20.04.001	39.5 mm	14.45 mm	47.0 mm	19 mm	19 → 16 mm	600 m	Cal. 8800
Seamaster	Seamaster Planet Ocean 43.5	215.30.44.21.01.001	43.5 mm	16.55 mm	52.0 mm	21 mm	21 → 18 mm	600 m	Cal. 8900
Seamaster	Seamaster Planet Ocean Chronograph	215.30.46.51.01.001	45.5 mm	18.7 mm	53.5 mm	22 mm	22 → 18 mm	600 m	Cal. 9900
Seamaster	Seamaster Ultra Deep 6000M	215.30.46.21.03.001	45.5 mm	18.1 mm	52.0 mm	22 mm	22 → 20 mm	6,000 m	Cal. 8912
Seamaster	Seamaster Ploprof 1200M	227.30.55.21.01.001	55 × 48 mm	17.5 mm	55.0 mm	24 mm	integrated, no taper	1,200 m	Cal. 8912
Seamaster	Seamaster Railmaster	220.10.40.20.01.001	40 mm	12.65 mm	47.0 mm	20 mm	20 → 16 mm	150 m	Cal. 8806
Seamaster	Seamaster Heritage 1948	511.12.38.20.03.001	38 mm	12.8 mm	46.0 mm	19 mm	19 → 16 mm (leather)	60 m	Cal. 8804
Seamaster	Seamaster Bullhead Chronograph	225.10.43.50.01.001	43 × 43 mm	15 mm	46.0 mm	22 mm	22 → 20 mm	150 m	Cal. 3113
Constellation	Constellation 25	131.10.25.60.05.001	25 mm	9.5 mm	31.0 mm	integrated	16 → 12 mm	50 m	Quartz
Constellation	Constellation 29	131.10.29.20.05.001	29 mm	10.9 mm	35.0 mm	integrated	17 → 14 mm	100 m	Cal. 8700
Constellation	Constellation 36	131.10.36.20.06.001	36 mm	11.7 mm	42.0 mm	integrated	19 → 16 mm	100 m	Cal. 8800
Constellation	Constellation 39	131.10.39.20.06.001	39 mm	12.25 mm	45.0 mm	integrated	22 → 18 mm	100 m	Cal. 8900
Constellation	Constellation 41	131.10.41.21.13.002	41 mm	12.95 mm	47.0 mm	integrated	24 → 20 mm	100 m	Cal. 8900
De Ville	De Ville Prestige 39.5	424.13.40.20.06.001	39.5 mm	10.5 mm	46.0 mm	19 mm	19 → 16 mm (leather)	30 m	Cal. 2500
De Ville	De Ville Trésor 40	435.13.40.21.02.001	40 mm	10.5 mm	47.0 mm	20 mm	20 → 16 mm (leather)	30 m	Cal. 8910
De Ville	De Ville Hour Vision	433.13.41.21.03.001	41 mm	12.4 mm	48.0 mm	20 mm	20 → 16 mm (leather)	100 m	Cal. 8900
Globemaster	Globemaster	130.30.39.21.06.001	39 mm	12.5 mm	47.0 mm	19 mm	19 → 16 mm	100 m	Cal. 8900
Globemaster	Globemaster Annual Calendar	130.33.41.22.06.001	41 mm	14.9 mm	49.0 mm	20 mm	20 → 16 mm	100 m	Cal. 8922

Specs from the manufacturer's published technical data. Lug-to-lug values reflect commonly-cited caliper measurements where the manufacturer does not publish them and may vary by ±0.5 mm. References cover the principal current production variants per family - bezel, dial, and metal-option references usually share case dimensions.

Omega Watch Dimensions

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