This replica Pilots IW388110 41mm is a chronograph that sits between the compact 41mm generation and the oversized 44.5mm Top Gun models, occupying a middle ground that the previous Pilots chronograph generation once held as standard. The 43mm diameter was the default for IWC pilot chronographs before the 2021 downsizing, and the IW388110 retains that proportion for wearers who find 41mm too small and 44.5mm too dominant. The result is a chronograph that feels substantial on wrist without requiring large wrist circumference to carry.

Technical Overview

• Case diameter: 41mm
• Case material: 18K 5N gold
• Dial: green with gold-plated hands
• Crystal: sapphire with anti-reflective treatment
• Chronograph: automatic column-wheel
• Functions: hours, minutes, small seconds, chronograph, date
• Water resistance: 100 meters

At 43mm the IW388110 maintains backward compatibility with strap widths and lug geometry from older pilot chronographs, making it easier to source aftermarket straps if needed.

Inside the Movement

The automatic chronograph inside the IW388110 uses the same column-wheel architecture found across the current Pilots chronograph range. The 43mm case provides marginally more internal volume than the 41mm variant, though both house mechanically identical movements. The bi-directional pawl winding system captures energy efficiently from wrist motion, and the soft-iron inner cage provides anti-magnetic shielding rated for everyday electronic exposure. Subdials follow the 6-9-12 layout for running seconds, 60-minute counter, and 12-hour totalizer. Compare this middle-ground sizing against the AMG Petronas IW388108 at 41mm, or browse the Pilots catalog for every diameter option.

What Sets It Apart

The 43mm case diameter defines the IW388110 within the current Pilots lineup. While IWC shifted its primary chronograph platform to 41mm, the 43mm format persists for wearers who built their preference around the previous generation’s proportions. The extra 2mm over the 41mm variants translates to roughly 8% more dial area, which makes the chronograph subdials and date window fractionally more legible without adding conspicuous bulk. For anyone comparing iwc schaffhausen chronograph sizes, this replica Pilots IW388110 43mm fills the gap between contemporary compact and legacy oversized.

APS Factory Build Quality

Gold and green is an unusual pairing and an unforgiving one. IWC’s 5N alloy sits on the pink side of rose gold, and the IW388110 dial is a deep forest green rather than the brighter olive used elsewhere in the Pilot’s line — put a slightly too-yellow gold against a slightly too-bright green and the whole watch reads costume. APS Factory builds the 41mm chronographs around the clone Cal. 69385 and carries the gold references with the correct 5N colour temperature, which is the hardest part of this specific build. The green rubber strap has to match the dial tone exactly, since the two sit adjacent on the wrist. Where each factory leads across the IWC collections is set out in our factory rankings.

Why 5N Gold Matters

5N is the copper-heavy end of the rose gold range — warmer than 4N, cooler than the orange-shifted alloys used by some brands. Plating that lands even slightly yellow against this green dial breaks the whole colour relationship, which is why gold references separate factories faster than steel ones.

Frequently Asked Questions

Is the IW388110 case solid gold?

The genuine reference uses 18-carat 5N gold. The replica uses heavy gold plating over a base metal, matched to 5N colour temperature. The visual match is close; the weight and material are not identical to the original.

Which factory produces the best gold Pilot’s chronograph?

APS Factory for the 41mm references. Their clone Cal. 69385 is the strongest chronograph movement in the IWC replica market, and their gold tone lands on 5N rather than drifting yellow.

Does the green rubber strap suit a gold case?

It is the combination IWC shipped. The forest green reads as a natural counterweight to the warmth of 5N gold, and rubber keeps the watch wearable rather than turning it into a dress piece.

What is the power reserve?

The genuine Cal. 69385 runs 46 hours. The clone matches the column-wheel architecture and delivers a comparable reserve, enough to carry the watch across a weekend off the wrist.