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Tissot SeaStar 1000 Powermatic

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Tissot SeaStar 1000 Powermatic Specification

Brand, Seller, or Collection Name Tissot
Model number T1204071105100
Part Number T1204071105100
Model Year 2018
Item Shape Round
Dial window material type Sapphire
Display Type Analog
Clasp Folding Clasp with Safety and Diver Extension
Case material 316L Stainless Steel Case
Case diameter 43 millimeters
Case Thickness 12.7 millimeters
Band Material Stainless Steel
Band width 21 millimeters
Band Color Silver
Dial color Black
Calendar Date
Item weight 3.81 Ounces
Movement Swiss Automatic
Water resistant depth 300 Meters

Some dive watches are like an invitation to travel. Others prompt you to pull on your diving suit and set off to explore the sea. The Tissot SeaStar 1000 Powermatic is one of them. With its 43 mm steel case cut out for adventure, you will want it on your wrist whether you are immersed in the ocean or making your way against the urban tide. In any situation, the Tissot SeaStar 1000 Powermatic will give you the right time with ultra-readable elements displayed on the dial.

The dial itself comes in deep black, electric blue, metallic grey or a blue-black tone somewhat reminiscent of the ocean, while large hands and hour markers with luminous coating have the advantage of standing out perfectly in the dark.

The Tissot SeaStar 1000 Powermatic is a real diving instrument since the crown and transparent case back of the Tissot SeaStar 1000 Powermatic are screwed to guarantee uncompromising water-resistance down to 300 meters. You can keep track of time underwater with the robust, unidirectional, ceramic bezel. The watch is worn with a choice of straps, either made of steel with a divers extension deployant clasp or of rubber with a traditional buckle.

The Tissot SeaStar 1000 Powermatic movement

The movement is nicely designed, with the deep blue rotor adorned with white decoration and text. It is a fine balance to the rather purposeful face. At the $1000 price point that the Tissot SeaStar 1000 Powermatic plays in, you’d be right to expect excellent build quality and overall finish. The Tissot SeaStar 1000 Powermatic delivers in spades. This watch feels solid and very well built, it gives the impression that it could take quite the beating.

The Tissot SeaStar 1000 Powermatic is using the all-new Powermatic 80 automatic movement, which features a massive 80-hour power reserve. In reality, the Powermatic 80 is actually a considerably beefed up ETA 2824. Accuracy is pretty typical of an ETA movement, a deviation of +3 seconds per day. Other users experienced deviation in the +/-5 second per day which is pretty good. At that rate, you will likely be adjusting the time after 14 days of continuous use.

The Tissot SeaStar 1000 Powermatic  dial, case and crystal

The sapphire crystal has a nice coat of anti-glare material, making it easy to see in almost all situations. The night-time visibility is excellent. In dark environments such as 50 meters underwater, you will have no problem reading the dial.

The case is stainless steel and feels rugged, it has considerable weight, but not enough to become tiresome when worn, just enough that you are reminded of the mechanical timepiece you are wearing.

The Tissot SeaStar 1000 Powermatic strap

The Tissot SeaStar 1000 Powermatic comes with rubber or stainless steel, both are quite well in terms of fitness around the wrist. Both are solid and yield plenty of flex in the strap.

The Tissot SeaStar 1000 Powermatic bezel

The new bezel design on Tissot SeaStar 1000 Powermatic also means the serrated grip on the outside of the bezel is a bit more prominent. Over the dial is an AR coated sapphire crystal and there are also some minor changes on the dial. Of course, the overall look and feel of the Seastar dial is the same, but the new model features an upgraded look. This starts with the new applied hour markers that are metal and then filled in with lume, along with a new date window that is a distinct entity versus blending in with the 3 o’clock hour indicator.

The Tissot SeaStar 1000 Powermatic verdict

What is also new is the “Powermatic 80” indicator on the dial. This is because the Tissot Seastar 1000 no longer uses the Swiss ETA 2824 automatic movement, but rather the new Tissot Powermatic 80 automatic movement which is the ETA caliber CO7.111. This I believe is essentially a modification of the 2824 but with an 80 hour versus roughly 40-hour power reserve.

It is possible that ETA was able to insert a larger mainspring as well, but the 80 hours of power reserve seems to mostly be a function of reducing the frequency of 2824 from 4 Hz (28,800 bph) to 3 Hz, (21,600 bph) in the CO7.111. What does this mean? Well, when a movement operates at a slower frequency there are fewer beats per second, and thus are deviations inaccuracy will be more pronounced.

Therefore, you can see that both the CO7.111 and 2824 movements have their own advantages. The Swatch Group is heavily leaning on the former as being the type of product that they feel will help get people more excited about watches because of the increased power reserve which tends to be unavailable in other watches at this price. Further, for the time being, the Powermatic 80 and other similar movements (Hamilton has some as well) are not going to be available in watches outside the Swatch Group brands.

In addition to being 42mm wide, the Seastar 1000 Powermatic is water-resistant to 300 meters (about 1000 feet), has an automatic helium escape valve in the case (why not?), and a nicely-sized and grippy crown. All of this comes in a relatively small package that further manages to have a modern and distinctive case design.

Tissot, of course, has a range of Seastar dive watches that goes into the much larger chronograph models. At 48mm wide, the Seastar Chronograph is an entirely different beast, but one of the coolest ones was the limited edition Seastar 1000 Chronograph Valjoux Limited Edition that I reviewed here. I think most will agree that at 42mm wide in a roughly 12mm thick case the new Seastar 1000 Powermatic strikes a great balance between size and design.

9Expert Score
Tissot SeaStar 1000 Powermatic
Tissot SeaStar 1000 Powermatic
Tissot SeaStar 1000 Powermatic comes in a 43 mm x 12.7 mm stainless steel case equipped with a unidirectional ceramic bezel and water resistant up to a pressure of 30 bar
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PROS
  • Swiss automatic ETA calibre Powermatic 80 with 25 jewels
  • scratch-resistant sapphire crystal
CONS
  • The comfort of this Seastar is not perfect, but there is really not much to complain about honestly