Edox CO-1 Chronograph AutomaticvsTissot Seastar 1000

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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

CO-1 Chronograph Automatic

Seastar 1000
Diameter
45mm
40mm
Thickness
16mm
12.5mm
lowest
Water Resistance
500m
highest
300m
Power Reserve
n/a
80h
MSRP
$3,490
$875
lowest
Movement
Caliber 011 (SW 500)
Tissot Powermatic 80
Case
6 specsCrystal & Dial
4 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Edox CO-1 Chronograph Automatic for its robust build, scratch-resistant case and sapphire crystal, and well-assembled Swiss automatic chronograph movement. Reviewers and owners alike note the 45mm case's substantial presence, with some appreciating its modern materials like carbon composite and ceramic bezel, while others find the blue carbon fiber dial and shiny elements distracting. A common point of contention is the clasp, described by some as uncomfortable and by others as a source of wrist discomfort, though the vanilla-scented rubber strap receives positive mentions. One owner reports a minute hand issue that was a simple fix, while another notes six years of ownership with consistent accuracy and durability. Overall, owners and reviewers find the Edox CO-1 Chronograph Automatic to be a well-specified and durably built tool watch, with the primary trade-offs being its large size and divisive clasp design.
Owners widely praise the Tissot Seastar 1000 for its value, solid build, and 300m water resistance, with reviewers highlighting its comfortable wearability and affordable price point for a sporty diver. Some owners find the bezel difficult to use and note glare from the crystal, while others criticize the lume and bracelet quality, with one owner describing the clasp as flimsy. Accuracy figures for the quartz models are excellent, and the Powermatic 80 movement is considered reliable. Overall, owners and reviewers rate the Tissot Seastar 1000 highly for its strong value proposition as a sporty, affordable everyday watch.
The 80-hour power reserve from the Powermatic 80 movement is a significant strength. Reviewers did not reach a consensus on any weaknesses.
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