Aera Instruments C-1vsIWC Schaffhausen Iw3716 Portugieser Chronograph

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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

C-1

Iw3716 Portugieser Chronograph
Diameter
42mm
41mm
Lug-to-Lug
49.5mm
n/a
Thickness
15.8mm
13mm
lowest
Water Resistance
100m
highest
30m
Power Reserve
56h
highest
46h
MSRP
$2,950
lowest
$23,500
Movement
Sellita SW510
69355
Case
7 specsCrystal & Dial
2 specsMovement
6 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Aera Instruments C-1 is praised for its excellent, distinctive design that balances tool-watch masculinity with soft, gentle aesthetics. The 42mm case size is considered large, and a smaller option would be welcome. On balance, reviewers highlight the distinctive design as the primary reason for their positive assessment.
Owners widely praise the IWC Schaffhausen Iw3716 Portugieser Chronograph for its legible and handsome design, with specific appreciation for the contrasting blue subdials on a white dial, often referred to as the "Blue Panda." The comfortable blue rubber strap is noted as versatile, though some suggest a leather strap for formal settings. The in-house automatic Calibre 69355 movement is visible through the display caseback, and its column-wheel chronograph actuation is described as crisp and smooth. One owner reported the watch arriving DOA and found damaged parts during attempted repairs, while another noted that the chronograph function should be used sparingly to avoid issues. The 30m water resistance is considered a minor drawback by reviewers. Overall, owners and reviewers rate the IWC Schaffhausen Iw3716 Portugieser Chronograph highly for its attractive aesthetic and refined movement at its price point.
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