The quick answer.
Tissot Seastar 1000 Quartz Black is a 40 mm dive watch at $484.50. We recommend it for someone who wants a real dive watch for swimming and snorkelling that also works as an everyday watch.
Why it belongs on the shortlist.
The Seastar is Tissot’s dive line, and the quartz model gives you the dive-watch look and rating without the cost or winding of an automatic. The 40 mm size and the slim case keep it wearable every day.
Our verdict: the grown-up quartz diver.
A rotating bezel, a screw-down crown and 300 m of rating is more than most people will ever use, and it is built into a slim, wearable watch. The sapphire crystal carries antireflective coating on both sides, which helps legibility. If you want a diver that works at a desk and in the water, this is the one we would pick from Tissot.
The dive features.
Tissot lists a screw-down crown and caseback, an anti-clockwise rotating bezel and a folding clasp with a safety lock. Our dive watch buying guide covers what the ratings mean.
Size and fit.
Tissot lists a 40 mm case width and length, 9.97 mm thickness and a 20 mm lug width. It is a little over 10 mm thick, which is slim for a diver.
Buying it from Watches of America.
Tissot’s US site lists T120.410.11.051.00 at $515; Watches of America lists it at $484.50 with one-to-three-day shipping. Our 10% code is supplied for the retailer, so confirm it applies to this reference at checkout and check warranty terms before ordering.
The details, at a glance.
- Reference
- T120.410.11.051.00
- Case diameter
- 40 mm
- Lug-to-lug
- Not published by the brand
- Thickness
- 9.97 mm
- Lug width
- 20 mm
- Case
- Stainless steel
- Crystal
- Sapphire with double antireflective coating
- Movement
- Swiss quartz, three hands with date
- Water resistance
- Water-resistant to 30 bar (300 m) with screw-down crown
- Strap / bracelet
- Stainless-steel bracelet, folding clasp with safety lock, quick-release
What draws us in
- 300 m with screw-down crown and caseback
- Anti-clockwise rotating bezel with Super-LumiNova hands
- Slim 9.97 mm case on a 20 mm lug width
Before you choose
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.
Who it suits.
Someone who wants a real dive watch for swimming and snorkelling that also works as an everyday watch.
When to choose something else.
Choose an automatic diver if you want a mechanical movement, or a larger case if you prefer a bigger watch.
Warranty, returns and ownership.
Watches of America lists a one-year retailer warranty and a 30-day return window on eligible items; conditions and a restocking fee may apply. Tissot’s own warranty is described for purchases through its boutiques and authorized retailers, and the listing does not say whether it carries over here, so ask Watches of America to confirm in writing if manufacturer coverage matters to you. Shipping is listed as one to three business days with free shipping available.
Closest alternatives.
- Citizen Promaster Dive Eco-Drive Light Blue: A solar 200 m Citizen diver for less, with no battery to change.
- Tissot PRC 200 Chronograph Blue: A 200 m Swiss quartz chronograph with a screw-down crown.
- Citizen Promaster Automatic Blue Dial (NY0086-16L): An automatic Citizen sports watch if you prefer a mechanical movement.
Think beyond the diameter.
The brand does not publish lug-to-lug for this reference, so use the case width, thickness and strap length to judge fit. Use our wrist-fit guide and compare the proportions with a watch you already enjoy wearing.
Watches of America partner code and offer terms. Our supplied code is SEBASTIANBASSOL for 10% off. Check the exact model and variant at the store, then confirm eligibility and the final total at checkout.
Where to buy.
Specifications and product photography: Tissot product page (checked October 17, 2026). Find Seastar 1000 Quartz Black at Watches of America through our partner link and search for the selected option there. How we choose.
A few good questions.
What is the discount code for the Tissot Seastar 1000 Quartz Black?
The Watches of America discount code is SEBASTIANBASSOL for 10% off at watchesofamerica.com. We have not tested it on this exact model, so confirm the saving in your order summary. Every code and tested price: https://watchritual.com/promo/watches-of-america
How much is the Tissot Seastar 1000 Quartz Black at Watches of America?
Watches of America listed T120.410.11.051.00 at $484.50 USD on October 17, 2026, against $515 on Tissot’s US site. Our supplied 10% code may lower it further; confirm it applies at checkout.
How water resistant is the Tissot Seastar 1000 Quartz Black?
Tissot lists water resistance to 30 bar (300 m / 1000 ft) with a screw-down crown.
What size is the Tissot Seastar 1000 Quartz Black?
Tissot lists a 40 mm wide and long case, 9.97 mm thick, with a 20 mm lug width.
Is the Tissot Seastar 1000 Quartz Black a dive watch?
Tissot lists a screw-down crown and caseback and an anti-clockwise rotating bezel with 300 m of water resistance.
