Side by side

Seiko Prospex Land MechanicalvsYema Navygraf Marine Nationale CMM.10

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

Prospex Land Mechanical
SeikoProspex Land Mechanical
MSRP $995
Navygraf Marine Nationale CMM.10
YemaNavygraf Marine Nationale CMM.10
MSRP $1,614

At a glance

14 of 29 specs differ
Diameter
Prospex Land Mechanical39.5mm
Navygraf Marine Nationale CMM.1039mm
Power Reserve
Prospex Land Mechanical72h
Navygraf Marine Nationale CMM.1040h
Water Resistance
Prospex Land Mechanical200m
Navygraf Marine Nationale CMM.10100m
MSRP
Prospex Land Mechanical$995
Navygraf Marine Nationale CMM.10$1,614

Full specifications

Case

7 specs
Category
Field
Diver
Diameter
39.5mm
39mm
Thickness
12.7mm
11mm
Lug-to-Lug
46.4mm
46mm
Lug Width
20mm
19mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
6R55
Yema CMM.10
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$995
$1,614

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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.

Seiko Prospex Land Mechanical

Owners widely praise the Seiko Prospex Land Mechanical for its unique style, useful day-date complication, and value, with some finding it suitable as a one-watch-for-all-occasions. Accuracy and durability are noted as strengths, with one owner reporting good performance even in water submersion. However, multiple owners criticize its size, with figures around 41mm to 43mm and 14.4mm thickness being flagged as too large and thick for smaller wrists. The Hardlex crystal and a potentially loose inner compass bezel are also points of criticism. On balance, owners rate the Seiko Prospex Land Mechanical highly for its unique style and value, despite concerns over its substantial dimensions.

Yema Navygraf Marine Nationale CMM.10

The Yema Navygraf Marine Nationale CMM.10 is lauded for its vibrant blue dial and bezel, a slimmer 39mm case at 11mm thick, and its in-house CMM.10 caliber offering a 70-hour power reserve. Reviewers highlight the clean, legible dial, blue sapphire bezel insert, and competitive pricing under $2,000. However, the steel bracelet's clasp is noted by multiple sources as rattly and feeling slightly cheap, with one reviewer finding it difficult to open. Accuracy is reported within a range of +5/-3 seconds per day. Overall, reviewers praise the Yema Navygraf Marine Nationale CMM.10 for its attractive design and value proposition, tempered by minor concerns regarding the bracelet clasp.

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