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Side by side · Tissot Seastar 1000 Quartz vs Citizen Promaster Dive

Seastar 1000 Quartz Black
or Promaster Dive Eco-Drive Light Blue?

Choose the Seastar for 300 m, a screw-down crown and Swiss quartz in a slim 40 mm case. Choose the Citizen Promaster Dive for solar power that never needs a battery and a lower price.

Shop at Watches of America
Shop at Watches of America · $320.66 with code

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Choose the Seastar 1000 Quartz Black for
  • More water resistance: 300 m vs 200 m
  • Sapphire crystal
  • Slimmer: 9.97 mm vs 11 mm
  • Smaller case for slimmer wrists: 40 mm vs 44 mm
  • Quartz accuracy, no winding
  • Watch Ritual code SEBASTIANBASSOL supplied for 10% off
Read the full review
Choose the Promaster Dive Eco-Drive Light Blue for
  • Costs $128.22 less at its listed price
  • More wrist presence at 44 mm
  • Solar power: no battery changes or winding
  • Watch Ritual code SEBASTIANBASSOL tested: $320.66 before shipping
Read the full review

The specs, side by side.

Seastar 1000 Quartz BlackPromaster Dive Eco-Drive Light Blue
Listed price$484.50 at Watches of America$356.28 at Watches of America
Case diameter40 mm44 mm
Thickness9.97 mm11 mm
Lug-to-lugNot publishedNot published
MovementSwiss quartz, three hands with dateCitizen Eco-Drive E168 (light-powered)
Power reserveBattery (quartz)Light-powered
Water resistance300 m200 m
CrystalSapphire with double antireflective coatingMineral crystal
Strap / braceletStainless-steel bracelet, folding clasp with safety lock, quick-releaseStainless-steel bracelet, safety fold-over clasp with push-buttons

Who should buy which.

The Seastar 1000 Quartz Black: Someone who wants a real dive watch for swimming and snorkelling that also works as an everyday watch. Choose an automatic diver if you want a mechanical movement, or a larger case if you prefer a bigger watch.

The Promaster Dive Eco-Drive Light Blue: Someone who wants a genuine dive-rated watch that keeps running without batteries, winding or regular servicing. Skip it if you have a smaller wrist or want sapphire. The Tissot PRX Quartz is a smaller everyday alternative, and a mechanical diver suits buyers who enjoy an automatic movement.

Before you order.

It is a quartz watch, so the battery will eventually need replacing, and it is priced above many automatic divers. Tissot lists a 40 mm case; if you prefer a larger dive watch, look elsewhere.

At 44 mm across it wears large; check the size against a watch you own. Citizen uses mineral crystal rather than sapphire, so it is more prone to scratches over the years.

A few good questions.

Should I buy the Tissot Seastar 1000 Quartz Black or the Citizen Promaster Dive Eco-Drive Light Blue?

Choose the Seastar for 300 m, a screw-down crown and Swiss quartz in a slim 40 mm case. Choose the Citizen Promaster Dive for solar power that never needs a battery and a lower price.

Which is cheaper, the Tissot Seastar 1000 Quartz Black or the Citizen Promaster Dive Eco-Drive Light Blue?

The Citizen Promaster Dive Eco-Drive Light Blue is listed at $356.28, against $484.50 for the Tissot Seastar 1000 Quartz Black, checked 2026-10-17.

Which is more water resistant, the Tissot Seastar 1000 Quartz Black or the Citizen Promaster Dive Eco-Drive Light Blue?

The Tissot Seastar 1000 Quartz Black is rated to 300 m, against 200 m for the Citizen Promaster Dive Eco-Drive Light Blue.

Is there a discount code for the Tissot Seastar 1000 Quartz Black or the Citizen Promaster Dive Eco-Drive Light Blue?

SEBASTIANBASSOL is our supplied code for 10% off at Watches of America; confirm it applies at checkout. SEBASTIANBASSOL is our supplied code for 10% off at Watches of America; it lowered the Citizen Promaster Dive Eco-Drive Light Blue to $320.66 in our test.

More head-to-heads.

Specs: Tissot product page (checked October 17, 2026) and Citizen product page (checked October 17, 2026). Prices are the listed prices at the store each shop button opens.