Side by side

Seiko Prospex SeavsSwatch Sistem Meche

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.

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.

Swatch Sistem Meche

Owners widely report the Swatch Sistem Meche's automatic movement is durable, with one owner using theirs roughly for four years without issue. Accuracy figures vary, with one owner noting gains of 1-2 seconds daily when worn, but over 12 seconds when stationary, while another reports -2 seconds/day accuracy, praising it as remarkable for the price. The watch features a 90-hour power reserve, and its transparent case back is admired. However, the Swatch Sistem Meche's sealed, non-serviceable construction is a point of concern for some, who note that Swatch typically replaces rather than services these watches, and that the plastic case can scratch easily. The automatic movement does not hack, and some users report the minute hand takes time to adjust after setting. Overall, owners rate the Swatch Sistem Meche highly for its impressive power reserve and accuracy at its price point, despite concerns about its non-serviceable design.

At a glance

16 of 29 specs differ
Diameter
Prospex Sea43.8mm
Sistem Meche42mm
Power Reserve
Prospex Sea41h
Sistem Meche
Water Resistance
Prospex Sea200m
Sistem Meche30m
MSRP
Prospex Sea$625
Sistem Meche$250

Full specifications

Case

7 specs
Category
Diver
Mechanical
Diameter
43.8mm
42mm
Thickness
12.8mm
13.8mm
Lug-to-Lug
48.7mm
50.6mm
Lug Width
22mm
Material
Stainless Steel
Water Resistance
200m
30m

Crystal & Dial

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

Movement

5 specs
Caliber
4R35
Power Reserve
41h
0h
Jewels
23
0
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$625
$250
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