Side by side

Seiko Prospex Sea 1968 Heritage Diver's GMT WatchvsYema Granvelle CMM.29

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

Granvelle CMM.29
YemaGranvelle CMM.29
MSRP $1,913

At a glance

12 of 29 specs differ
Diameter
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
Granvelle CMM.2939mm
Power Reserve
Prospex Sea 1968 Heritage Diver's GMT Watch72h
Granvelle CMM.2940h
Water Resistance
Prospex Sea 1968 Heritage Diver's GMT Watch300m
Granvelle CMM.2950m
MSRP
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700
Granvelle CMM.29$1,913

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
42mm
39mm
Thickness
13.3mm
8.6mm
Lug-to-Lug
48.6mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
50m

Crystal & Dial

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

Movement

3 specs
Caliber
6R54
Yema CMM.29
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,700
$1,913

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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 Sea 1968 Heritage Diver's GMT Watch

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch offers a 300-meter depth rating and a caller-style GMT complication powered by the Caliber 6R54 movement, which provides a 72-hour power reserve. Reviewers note its refined clasp with extensive micro-adjustment. However, the movement's accuracy, ranging from +25 to -15 seconds per day, is considered a drawback by some. Overall, reviewers highlight the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch as a good reminder of Seiko's value, despite the wide accuracy range of its movement.

Yema Granvelle CMM.29

Owners praise the Yema Granvelle CMM.29's gorgeous dial, noting its guilloché pattern and carved hour indices that catch the light. One owner describes the movement as a "feast for the eyes" but finds the watch frustrating at work due to its lack of a specific function. On balance, owners appreciate the Yema Granvelle CMM.29 for its visually striking dial and movement finishing, with some finding its utility limited in certain professional contexts.

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