Tissot · Seastar 1000 Powermatic 80
Three hundred metres, Swiss made, eighty hours.
The Seastar 1000 is Tissot’s serious diver: a 300m rating, a ceramic bezel insert, sapphire, and the same Powermatic 80 automatic as the PRX. Few Swiss-made divers at this price carry all three.
Water resistance
300m
https://watchbase.com/tissot/seastar/t120-407-11-041-03
Movement
Powermatic 80
Caliber 80.111, Swiss automatic
Power reserve
80 hours
https://watchbase.com/tissot/seastar/t120-407-11-041-03
Bezel
Ceramic insert
Unidirectional
Crystal
Sapphire
Anti-reflective coating underneath
What 300m buys
Most affordable divers are rated to 200m. The Seastar 1000 is rated to 300m, or 30 bar, with a screw-down crown and caseback. That is recreational scuba territory with room to spare, and it is the number in the name.
The bezel is unidirectional with a ceramic insert, which does not fade or scratch the way painted aluminium does. Over the dial is sapphire with an anti-reflective coating on the underside. Super-LumiNova covers the hands and markers.
The PRX engine
Inside is the Powermatic 80, caliber 80.111, the same Swiss automatic Tissot fits to the PRX. It runs at 21,600 vibrations per hour on 23 jewels with an 80-hour reserve. Take it off Friday and it is running Monday.
The bracelet is steel with a folding clasp, a safety lock and a diver extension, on quick-release bars. These are the published figures; nothing has been timed or measured for this page.
Which colour, which size
Tissot sells the Seastar 1000 Powermatic 80 in several dial and bezel colours under adjacent references. The reference in our catalogue is one every source lists as blue dial with a blue ceramic bezel. The photograph on this page shows a black dial and black bezel, a different colourway.
The case size is also reported inconsistently between our catalogue and independent spec sheets, so this page does not print a diameter. Confirm dial colour and size on the listing before you buy. The 300m rating, the ceramic bezel and the Powermatic 80 are common to all of them.
Specs
- Reference
- T120.407.11.041.03
- Case size
- 40mm
- Case material
- Stainless Steel
- Movement
- Automatic Powermatic 80 (Caliber 80.111)
- Caliber type
- ETA/Tissot Automatic
- Crystal
- Sapphire Crystal
- Water resistance
- 300m (30 ATM)
- Power reserve
- 80 Hours
- Complications
- Date
- Jewels
- 23 Jewels
- Frequency
- 21,600 vph (3 Hz)
- Origin
- Swiss Made
Specifications as published by Tissot. We research from manufacturer documentation and published sources rather than hands-on testing. Researched 2026-09-03.
Verdict
A 300m Swiss diver with ceramic, sapphire and an 80-hour automatic, at a price where most rivals offer 200m and mineral glass.
Strengths
- 300m water resistance with a screw-down crown
- Ceramic bezel insert and sapphire crystal
- Powermatic 80 with an 80-hour reserve
- Bracelet with diver extension on quick-release bars
Trade-offs
- Several colourways share the name; the photo may not match the listing
- Case diameter is reported inconsistently; verify before buying
- A heavy watch on the bracelet
- No Amazon link on this page until a matching listing is verified
Buy it if
Someone who wants a Swiss automatic diver with real depth and materials without paying luxury-brand prices.
Skip it if
You want a compact diver, or you want the exact dial colour pinned down without reading the listing.
FAQ
It is rated to 300m (30 bar), with a screw-down crown and caseback. That covers recreational scuba diving with a wide margin.
Sources
Researched and last updated 2026-09-03. We do not test watches in hand; every figure above is traceable to the manufacturer or the sources listed here.
Tissot Seastar 1000 Automatic
Reference T120.407.11.041.03 · $500–$1,000
Prices and availability change; the band above is a research figure, so check the current listing.
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