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

IWC sizing skews larger than most luxury Swiss makers - Big Pilot 43mm and 46.2mm, Portugieser Chronograph 41mm but with 13.1mm thickness, Aquatimer Chronograph 44mm × 17mm. The 2023 Ingenieur 40 brought a 40mm × 10.7mm sport-luxury option back to the lineup.

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Family:

Family	Model	Reference	Diameter	Thickness	Lug-to-Lug	Lug Width	Bracelet Taper	Water	Movement
Pilot	Big Pilot 43	IW329301	43 mm	13.6 mm	53.0 mm	22 mm	22 → 18 mm	100 m	Cal. 82100
Pilot	Big Pilot 46	IW501001	46.2 mm	15.4 mm	58.0 mm	22 mm	22 → 18 mm	60 m	Cal. 51111
Pilot	Pilot's Watch Mark XX	IW328201	40 mm	10.8 mm	47.0 mm	20 mm	20 → 18 mm	100 m	Cal. 32111
Pilot	Pilot's Chronograph 41	IW388101	41 mm	14.5 mm	49.5 mm	20 mm	20 → 18 mm	100 m	Cal. 69385
Pilot	Pilot's Chronograph 43	IW377710	43 mm	15.4 mm	52.0 mm	21 mm	21 → 18 mm	60 m	Cal. 79320
Pilot	Top Gun Chronograph 44.5	IW389101	44.5 mm	15.7 mm	53.0 mm	22 mm	22 → 18 mm	60 m	Cal. 69380
Portugieser	Portugieser Chronograph	IW371617	41 mm	13.1 mm	48.0 mm	21 mm	21 → 18 mm (alligator)	30 m	Cal. 69355
Portugieser	Portugieser Automatic 42	IW501701	42.4 mm	14.4 mm	52.0 mm	22 mm	22 → 18 mm (alligator)	30 m	Cal. 52010
Portugieser	Portugieser Hand-Wound Eight Days	IW510205	43 mm	12.3 mm	52.0 mm	22 mm	22 → 18 mm (alligator)	30 m	Cal. 59210
Portugieser	Portugieser Perpetual Calendar	IW344204	44.2 mm	15.3 mm	54.0 mm	22 mm	22 → 18 mm (alligator)	30 m	Cal. 52615
Portofino	Portofino Automatic 40	IW356517	40 mm	9.4 mm	45.0 mm	20 mm	20 → 18 mm (alligator)	30 m	Cal. 35110
Portofino	Portofino Chronograph 42	IW391033	42 mm	12.5 mm	49.0 mm	22 mm	22 → 18 mm (alligator)	30 m	Cal. 79320
Aquatimer	Aquatimer Automatic 42	IW328802	42 mm	14.0 mm	50.0 mm	22 mm	22 → 18 mm	300 m	Cal. 30120
Aquatimer	Aquatimer Chronograph 44	IW376805	44 mm	17.0 mm	53.0 mm	22 mm	22 → 18 mm	300 m	Cal. 89365
Ingenieur	Ingenieur Automatic 40	IW328901	40 mm	10.7 mm	45.7 mm	integrated	22 → 18 mm	100 m	Cal. 32111

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.

IWC Watch Dimensions

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