Hamilton Khaki Field Auto vs Sinn 556 I
Both are field / explorer watches in the upper tier — here's how the specs differ and which to pick.
| Spec | Hamilton Khaki Field Auto | Sinn 556 I |
|---|---|---|
| Movement | Automatic | Automatic |
| Water resistance | 100m | 200m |
| Case size | 42mm | 38.5mm |
| Crystal | sapphire | sapphire |
| Style | Field / explorer | Field / explorer |
| Price tier | Upper | Upper |
Which should you buy?
- the Sinn 556 I takes more water (200m) — the one to pick if you actually swim or dive
- the Hamilton Khaki Field Auto wears 42mm vs the Sinn 556 I's 38.5mm — choose by wrist size
Where to buy
Check the Hamilton Khaki Field Auto price on Amazon →
Check the Sinn 556 I price on Amazon →
FAQ
What's the difference between the Hamilton Khaki Field Auto and the Sinn 556 I?
Both are field / explorer watches in the upper tier. The Hamilton Khaki Field Auto is automatic, 100m water resistance, 42mm, sapphire crystal; the Sinn 556 I is automatic, 200m water resistance, 38.5mm, sapphire crystal.
Which has better water resistance, the Hamilton Khaki Field Auto or the Sinn 556 I?
The Sinn 556 I, rated 200m, versus 100m on the other. Pick 100m or higher for swimming and 200m+ for diving.
Which is better value, the Hamilton Khaki Field Auto or the Sinn 556 I?
Both sit in the upper tier, so it comes down to movement, water resistance and case size — see the spec table above.
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