Tissot Seastar 1000 Powermatic 80 — Black Dial, Steel Bracelet
The watch
Built around a black dial, the Tissot Seastar 1000 Powermatic 80 pairs a 43mm case with a Powermatic 80 automatic movement. Highlights include 300m water resistance and a sapphire crystal. It belongs to Hour IV, Dive, in our Expedition season: a natural choice for swimming, sailing and beach travel.
A jet-black sunburst dial anchors this Seastar 1000, framed by a 43mm brushed-and-polished stainless steel case and a coin-edged ceramic bezel. High-contrast lume and bold markers keep it purposeful, stealthy and endlessly wearable.
The Swiss Powermatic 80 automatic drives the watch from the motion of your wrist and banks around 80 hours of reserve. Its rotor is on display through the see-through caseback, a quiet reminder of the Swiss engineering inside.
Sealed by a screw-down crown and caseback, the Seastar is rated to 300 meters — ready for swimming, snorkeling and serious water time. The matching steel bracelet balances the case for comfort through a long day.
The default choice for anyone who wants a versatile, do-anything black diver that never looks out of place.
New, boxed and warrantied — ships within the US.
Good to know
It is a self-winding Swiss automatic movement powered by the motion of your wrist, with no battery required. Fully wound it holds roughly 80 hours of running reserve.
Yes. It is water resistant to 300 meters (30 ATM) with a screw-down crown, so it is rated for swimming, snorkeling and recreational scuba diving. Always make sure the crown is fully screwed down before entering the water.
The case measures 43mm — a bold size that suits larger wrists (roughly 17.5 cm / 6.9 in and up). Our watch size guide (/pages/watch-size-guide) explains how to measure your wrist.
It has a black dial, framed by a unidirectional rotating dive bezel with ceramic insert bezel, under a sapphire crystal.
The unidirectional rotating dive bezel only turns one way so you can safely track elapsed time, while the scratch-resistant sapphire crystal keeps the dial clear and legible for years.
Yes. It is an authentic Swiss Made Tissot, shipped brand-new and boxed with a 2-year international warranty.
On the ChronoSeasons dial it sits at Hour IV — Dive, part of the Expedition season, and suits swimming, sailing, beach travel and everyday wear.
Yes. It ships brand-new and boxed from the brand's verified channel, with a 2-year international warranty. Unworn watches can be returned within 30 days of delivery.
From the journal
Owners say
Unidirectional 120-click ceramic bezel has crisp detents, and the sapphire crystal over the exhibition caseback is an uncommon treat on a 300m-rated diver. At 12.7mm thick it sits much lower than most 300m automatics in my watch box. The C07.111 caliber has stayed within +1.5 seconds per day over two weeks of daily wear.
Wears much more compact than the 43mm spec suggests, even on my wrist. The black sunray dial and ceramic bezel look sharp with a polo or sweater, and it keeps time through the whole weekend.
The stock steel bracelet with polished center links dresses up nicely, and the quick-release spring bars make it easy to swap onto a 21mm grey NATO or tropic rubber strap for the beach. Fits my wrist great.
Glad you're putting those quick-release spring bars to good use, Nolan! Enjoy the Seastar.
Wore this swimming and kayaking all weekend upstate. The 300m rating and screw-down crown give total peace of mind in the water, and the black dial is legible at a glance. Wish the clasp had one more micro-adjust setting for humid afternoons.
The 43mm stainless case and solid-link bracelet have serious heft, around 180 grams sized for my wrist, which took a couple days to get used to. Screw-down crown threads are clean, the ceramic bezel clicks crisply, and timekeeping is spot on.
Appreciate the feedback, Russell! A 300m all-steel diver definitely brings some reassuring weight to the wrist.
Even with a 43mm diameter and 12.7mm thickness, the curved lugs on the Seastar 1000 hug my wrist comfortably. The 120-click unidirectional ceramic bezel lines up dead center at 12 o'clock with minimal backplay, and the Powermatic 80 movement is averaging +2.5 sec/day. Only minor critique is the folding clasp spacing left it slightly snug between holes on a warm afternoon.
Thanks for the detailed review, Joshua! We're glad the ceramic bezel alignment and Powermatic 80 accuracy are right on the money for you.
Been wearing this as my daily for three weeks. The glossy black ceramic bezel and black dial look much richer in real light than on a screen, and the 43mm case balances well on my wrist.
Took this Seastar 1000 down to the Keys for four days of reef diving and boating. The screw-down crown threads smoothly, the 120-click ceramic bezel is easy to grip with wet hands, and the lume on those wide hands is super easy to read underwater.
Sized the factory stainless bracelet with its diver extension for my wrist, and thanks to the quick-release pins I also swap in a 21mm black FKM rubber strap when I'm working in the shop or heading out on the water.
