Side by side

Marnaut Safe Harbour 100CvsTissot Seastar 1000 Powermatic 80 GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Marnaut Safe Harbour 100C

The Marnaut Safe Harbour is widely praised for its compact 39mm tonneau case and its unique sea urchin-inspired dial. Reviewers note the case wears well despite its 13.2mm thickness. One owner flagged a potential lume inconsistency, which was attributed to UV lighting effects. The slender handset can be difficult to read against the busy dial, and the faux-crocodile strap is stiff initially. Overall, owners and reviewers appreciate the Marnaut Safe Harbour for its distinctive dial and comfortable wearability.

Tissot Seastar 1000 Powermatic 80 GMT

Owners widely praise the Tissot Seastar 1000 Powermatic 80 GMT for its excellent build quality, smooth winding feel, and the reliable Powermatic 80 movement providing an 80-hour power reserve. Reviewers highlight its remarkable value under $700, comfortable wearability, and appealing case/dial ratio. Some owners note the bezel's functionality for tracking a second time zone and the need to adjust the hour hand for date setting, a characteristic of its "True" GMT function. The rubber strap is considered comparable to those found on significantly more expensive watches. However, concerns exist regarding the movement's serviceability due to potential plastic components and reliance on Swatch Group service centers. Some find the bezel font and dial spacing unappealing, while others question the mineral glass bezel insert as a cost-cutting measure compared to ceramic. Accuracy is generally reported as good, though not COSC certified, and lume intensity is described as average by one owner.

At a glance

13 of 29 specs differ
Diameter
Safe Harbour 100C39mm
Seastar 1000 Powermatic 80 GMT46mm
Power Reserve
Safe Harbour 100C41h
Seastar 1000 Powermatic 80 GMT80h
Water Resistance
Safe Harbour 100C100m
Seastar 1000 Powermatic 80 GMT300m
MSRP
Safe Harbour 100C$899
Seastar 1000 Powermatic 80 GMT$1,375

Full specifications

Case

6 specs
Category
GMT
Diameter
39mm
46mm
Thickness
13mm
15.4mm
Lug-to-Lug
45mm
46mm
Lug Width
20mm
22mm
Water Resistance
100m
300m

Crystal & Dial

4 specs
Crystal Shape
Flat
Domed
AR Coating
Inner
Yes
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

2 specs
Caliber
Sellita SW200-1
Tissot Powermatic 80
Power Reserve
41h
80h

Pricing

1 specs
MSRP
$899
$1,375
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