Side by side

Seiko King TurtlevsYema Granvelle CMM.29

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

King Turtle
SeikoKing Turtle
MSRP $650
Granvelle CMM.29
YemaGranvelle CMM.29
MSRP $1,913

At a glance

13 of 29 specs differ
Diameter
King Turtle45mm
Granvelle CMM.2939mm
Power Reserve
King Turtle41h
Granvelle CMM.2940h
Water Resistance
King Turtle200m
Granvelle CMM.2950m
MSRP
King Turtle$650
Granvelle CMM.29$1,913

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
45mm
39mm
Thickness
13.2mm
8.6mm
Lug-to-Lug
47.7mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
200m
50m

Crystal & Dial

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

Movement

3 specs
Caliber
4R36
Yema CMM.29
Power Reserve
41h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$650
$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 King Turtle

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superior lume, with many appreciating its faithful recreation of classic designs and proven movements like the 4R36 and 6R15. Reviewers highlight impressive case finishing and durability, noting that even larger models wear smaller than expected due to thoughtful case design. Some owners find the solar quartz models a great entry point, appreciating their design and solar functionality. However, specific variants receive critiques: the bracelet clasp on the Samurai is described as underwhelming, and the Sumo's bracelet width and clasp are seen as too narrow and rudimentary, respectively. The SPB183 is considered expensive for a Japanese watch, and its lume is noted as not quite matching older Seiko Monster models. The GMT function on the SPB519 is deemed less practical for serious travel, and its bezel clicks are described as quieter and mushier.

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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