Side by side

Seiko Prospex SeavsYema Navygraf Marine Nationale Quartz

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

Prospex Sea
SeikoProspex Sea
MSRP $1,500
Navygraf Marine Nationale Quartz
YemaNavygraf Marine Nationale Quartz
MSRP $499
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

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

Yema Navygraf Marine Nationale Quartz

Owners praise the Yema Navygraf Marine Nationale Quartz for its well-made case, clean legible dial, and comfortable 39mm size, with one noting its thin profile for 300m water resistance. Accuracy figures vary, with one owner reporting +6 seconds per day and another seeing it keep within COSC time. Minor criticisms include a steel bracelet with a slight rattle and sharp edges, bent bracelet pins, and in one instance, crooked dial printing. On balance, owners find the Yema Navygraf Marine Nationale Quartz offers good value and wearability, with its French design and thinner case being key highlights.

At a glance

14 of 29 specs differ
Diameter
Prospex Sea43.5mm
Navygraf Marine Nationale Quartz39mm
Power Reserve
Prospex Sea70h
Navygraf Marine Nationale Quartz40h
Water Resistance
Prospex Sea200m
Navygraf Marine Nationale Quartz100m
MSRP
Prospex Sea$1,500
Navygraf Marine Nationale Quartz$499

Full specifications

Case

6 specs
Diameter
43.5mm
39mm
Thickness
13.3mm
11mm
Lug-to-Lug
51mm
Lug Width
22mm
19mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

3 specs
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Standard
Lume
LumiBrite on hands and index(es)
None

Movement

4 specs
Caliber
6R35
Type
Automatic
Quartz
Power Reserve
70h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,500
$499
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