Hamilton Intra-Matic Auto Chronograph vs Tissot Seastar 1000 Chronograph

Both are chronograph watches. In short: the Hamilton Intra-Matic Auto Chronograph is mechanical (automatic) for the enthusiast feel and no battery; the Tissot Seastar 1000 Chronograph is quartz for accuracy and low maintenance. The Hamilton Intra-Matic Auto Chronograph is automatic, 100m water resistance, 40mm, sapphire crystal; the Tissot Seastar 1000 Chronograph is quartz, 300m water resistance, 45.5mm, sapphire crystal.

Specs last verified 2026-06-27 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

Spec	Hamilton Intra-Matic Auto Chronograph	Tissot Seastar 1000 Chronograph
Movement	Automatic	Quartz
Water resistance	100m	300m
Case size	40mm	45.5mm
Crystal	sapphire	sapphire
Style	Chronograph	Chronograph
Price tier	Premium	Upper

Which should you buy?

The Hamilton Intra-Matic Auto Chronograph is mechanical (automatic) for the enthusiast feel and no battery; the Tissot Seastar 1000 Chronograph is quartz for accuracy and low maintenance
The Tissot Seastar 1000 Chronograph takes more water (300m) — both are fine for swimming, but it has more margin if you dive
The Hamilton Intra-Matic Auto Chronograph wears 40mm vs the Tissot Seastar 1000 Chronograph's 45.5mm — choose by wrist size
The Tissot Seastar 1000 Chronograph sits in the lower price tier (Upper) if budget leads

Where to buy

Hamilton Intra-Matic Auto ChronographSee price on AmazonCheck price

Tissot Seastar 1000 ChronographSee price on AmazonCheck price

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FAQ

What's the difference between the Hamilton Intra-Matic Auto Chronograph and the Tissot Seastar 1000 Chronograph?
Both are chronograph watches. The Hamilton Intra-Matic Auto Chronograph is automatic, 100m water resistance, 40mm, sapphire crystal; the Tissot Seastar 1000 Chronograph is quartz, 300m water resistance, 45.5mm, sapphire crystal.

Which has better water resistance, the Hamilton Intra-Matic Auto Chronograph or the Tissot Seastar 1000 Chronograph?
The Tissot Seastar 1000 Chronograph, rated 300m, versus 100m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Hamilton Intra-Matic Auto Chronograph or the Tissot Seastar 1000 Chronograph?
The Tissot Seastar 1000 Chronograph is the lower-priced tier; the other steps up in build for more money — confirm both live prices at the retailer.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-27. Copy a ready-made reference:

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