IWC Portofino automatic day and night 37, for citizens of the world 2026

Michael Goldman
IWC Portofino automatic day and night 37, for citizens of the world - grandgoldman.com
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Like a timeless jewel. This is how the master watchmakers at IWC have conceived theIWC Portofino automatic day and night 37, a piece with a diamond-set bezel and white mother-of-pearl dial with dual time zones that makes an elegant impression 24 hours a day.

The proven caliber 35700 mechanical movement with a 42-hour power reserve is responsible for giving life to theIWC Portofino automatic day and night 37which is also characterized by its second time zone. While the hour, minute and second hands report the current local time, the blue hand indicates an optional second local time on the inner 24-hour ring.


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To facilitate orientation and visual distinction between day and night, the lower half of the Portofino automatic day and night 37 (between 6 and 18 o'clock) is presented in white. The upper part (between 6 and 18 o'clock), in blue.

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A complication for citizens of the world that in one position of the crown the hour and minute hands can be adjusted, for example, when entering a new time zone. Meanwhile, the small blue hand maintains its position and continues to indicate home time.

However, the mother-of-pearl dial with its white reflections allows the dark blue of the semicircle and the small time zone hand to stand out.

But the design ofIWC Portofino automatic day and night 37goes further. This chronograph is available in a red gold case or a stainless steel case in combination with a black or dark blue alligator strap from Santoni. And for the most daring, it is also available with a Milanese mesh bracelet in stainless steel or 18-karat red gold.

Features of the Portofino automatic day and night 37

MOTION
Caliber: 35700
Frequency: 28,800 A/h / 4 Hz
Rubies: 27
Power reserve: 42 hours
automatic winding

RELOJ
Materials Ref. IW459101: stainless steel case with 66 diamonds, white mother-of-pearl dial with 12 diamonds, dark blue alligator leather strap with stainless steel buckle.

Ref. IW459102: 18K red gold case with 66 diamonds, white mother-of-pearl dial with 12 diamonds, black alligator leather strap with red gold buckle.

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Sapphire crystal, domed, anti-reflective on both sides
Hermetic: 3 bar
Diameter: 37mm
Height: 11mm

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Michael Goldman

Author

Michael Goldman

Michael is an award-winning online reporter and content writer with over a decade of experience covering technology, business, and digital culture. His investigative features have been published in leading outlets such as Wired, The Verge, and Forbes, earning him recognition for accuracy and depth.


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