For whom?
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Aviation/pros : Pilots or aeronautical enthusiasts thanks to the calculation rule (speed calculations, fuel consumption).
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Occasional athletes : 100 -meter seal adapted to swimming, but avoid diving.
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WORLOGER geeks : Overloaded but functional design, reliable quartz mechanism (difference of ± 20 seconds/month).
See the Casio EF-527D-1Avef and the opinions on Amazon
Design & Comfort
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Housing : 45 mm, thickness 11 mm – imposing (wrists ≥ 18 cm).
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Bracelet : Solid stainless steel, brushed finish with partial polis. Noise noise noted, but precise micrometric adjustment.
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Dial : Complex reading (tight figures), but indications and light needles (high -performance blue lume).
Features
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Slide rule : Useful for conversions and multiplications, but necessary learning.
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Chronograph : Precision at 1/20th of a second, has 12 hours. Functional subdials (hours, minutes, seconds).
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Robustness : Mineral glass (moderate scratches), crown and bottom screwed.
Autonomy
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Stack : Real duration ≈ 2 years, in accordance with promises.
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Interview : Simple replacement (access via screwed background).
Strengths/Weak points
| Strength | Weaknesses |
|---|---|
| Functional calculation rule | Size unsuitable for small wrists |
| Precise chronograph | Congested dial |
| Value for money | Noisy bracelet (hollow meshes) |
| Long -term brightness | Mineral glass (striped) |
Verdict
Top for piloting enthusiasts or looking for a reliable chronograph Alternative ::
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Citizen Nighthawk (≈350 €): 200 m waterproofing, but higher price.
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Seiko Flightmaster (≈300 €): Same aviation functions, sapphire glass.
If the calculation rule is secondary, favor a Casio Duro (better seal) or Timex Weekender (minimalist design).
