Side by side

Seiko Prospex SeavsYema Granvelle CMM.29

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

Prospex Sea
SeikoProspex Sea
MSRP $1,100
Granvelle CMM.29
YemaGranvelle CMM.29
MSRP $1,913

At a glance

12 of 29 specs differ
Diameter
Prospex Sea41.3mm
Granvelle CMM.2939mm
Power Reserve
Prospex Sea72h
Granvelle CMM.2940h
Water Resistance
Prospex Sea300m
Granvelle CMM.2950m
MSRP
Prospex Sea$1,100
Granvelle CMM.29$1,913

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
41.3mm
39mm
Thickness
12.5mm
8.6mm
Lug-to-Lug
48.2mm
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
6R55
Yema CMM.29
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,100
$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

Seiko Prospex Sea models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work and finishing at its price point.

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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