Side by side

Spinnaker Tesei Mille Metri GMTvsSeiko Prospex Sea

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
Prospex Sea
SeikoProspex Sea
MSRP $625

At a glance

12 of 29 specs differ
Diameter
Tesei Mille Metri GMT44mm
Prospex Sea43.8mm
Power Reserve
Tesei Mille Metri GMT40h
Prospex Sea41h
Water Resistance
Tesei Mille Metri GMT1,000m
Prospex Sea200m
MSRP
Tesei Mille Metri GMT$559
Prospex Sea$625

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
44mm
43.8mm
Thickness
16mm
12.8mm
Lug-to-Lug
52mm
48.7mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
1000m
200m

Crystal & Dial

2 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Seiko NH34A
4R35
Power Reserve
40h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$559
$625

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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 Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

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