Side by side

Seiko Prospex SeavsHELM Miyako

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

Owners widely praise the Seiko Prospex Sea for its excellent value, solid build, and comfortable wearability, with specific mentions of its matte black dial, excellent lume, and cushion case that wears smaller than its dimensions suggest. The 4R36 movement is noted for hacking and hand-winding capabilities, and the bezel action is described as smooth and precise. Some owners find the watch to be a legitimate tool with a fair price, while others describe it as big, thick, and heavy, uncomfortable for smaller wrists, though this is subjective as one owner found the size perfect. The solar quartz movement is also highlighted as a collection-worthy feature. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and comfortable, classic design.

HELM Miyako

HELM Miyako owners widely praise its exceptional value and quality, with multiple reports highlighting its stunning appearance and dial details. The watch is noted for its excellent accuracy, with figures around +1.5 to +2 seconds per day. One owner found the HELM Miyako to be tough and versatile, fitting well on a 6.6-inch wrist. Overall, owners consider the HELM Miyako an amazing value and a great watch, worth the wait for its availability.

At a glance

12 of 29 specs differ
Diameter
Prospex Sea42mm
Miyako40mm
Power Reserve
Prospex Sea72h
Miyako42h
Water Resistance
Prospex Sea300m
Miyako200m
MSRP
Prospex Sea
Miyako$375

Full specifications

Case

5 specs
Diameter
42mm
40mm
Thickness
13.3mm
13.75mm
Lug-to-Lug
48.6mm
47mm
Lug Width
20mm
22mm
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Double-Domed
AR Coating
Anti-reflective coating on inner surface
Yes
Dial Color
Gray
Lume
LumiBrite on hands, index(es) and bezel
Super-LumiNova

Movement

2 specs
Caliber
6R54
Power Reserve
72h
42h

Pricing

1 specs
MSRP
$375
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