Side by side

Spinnaker Tesei Mille Metri GMTvsSeiko Astron GPS Solar 2026 Limited Edition

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

Tesei Mille Metri GMT
SpinnakerTesei Mille Metri GMT
MSRP $559
Astron GPS Solar 2026 Limited Edition
SeikoAstron GPS Solar 2026 Limited Edition
MSRP $2,400

At a glance

12 of 29 specs differ
Diameter
Tesei Mille Metri GMT44mm
Astron GPS Solar 2026 Limited Edition41.2mm
Power Reserve
Tesei Mille Metri GMT40h
Astron GPS Solar 2026 Limited Edition40h
Water Resistance
Tesei Mille Metri GMT1,000m
Astron GPS Solar 2026 Limited Edition100m
MSRP
Tesei Mille Metri GMT$559
Astron GPS Solar 2026 Limited Edition$2,400

Full specifications

Case

6 specs
Diameter
44mm
41.2mm
Thickness
16mm
12mm
Lug-to-Lug
52mm
48.6mm
Lug Width
22mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
1000m
100m

Crystal & Dial

2 specs
AR Coating
Inner
Super-clear coating
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko NH34A
3X62
Type
Automatic
Quartz
Jewels
25
10

Pricing

1 specs
MSRP
$559
$2,400

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What people say

Owners + reviewers, side by side

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

Spinnaker Tesei Mille Metri GMT

The Spinnaker Fleuss Midnight Black features a reliable and accurate Japanese TMI NH35 Automatic Movement with 3 Hands and Date. A potential drawback is the watch's relatively low 15 ATM water-resistance rating compared to other watches in its class. Reviewers disagree on the watch's suitability for larger wrists, with one reviewer noting a 43mm diameter and 51mm lug-to-lug fit, while the other mentions a 51mm lug-to-lug measurement.

Seiko Astron GPS Solar 2026 Limited Edition

The Seiko Astron GPS Solar 2026 Limited Edition is noted for its advanced GPS timekeeping that automatically updates time and date via satellite signals, powered by light to eliminate battery changes. Owners appreciate its design and texture, and the legible dial despite its complexity, with one owner preferring its less overloaded appearance over other Astron models. However, the GPS function requires a clear outdoor line-of-sight to the sky for reception, which can be an issue indoors or in dense urban environments, and DST is not implemented. The watch is priced over $2,000, and while it features a perpetual calendar, it only displays the date. Overall, owners and reviewers find the Seiko Astron GPS Solar 2026 Limited Edition a functional and appealing watch, particularly for its automatic timekeeping and solar power, though its GPS reception limitations and price point are noted considerations.

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