Mühle-Glashütte Sea-Timer BlackMotionvsSeiko King Turtle

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Mühle-Glashütte Sea-Timer BlackMotion at true scale

Sea-Timer BlackMotion

Seiko King Turtle at true scale

King Turtle

Diameter

44mm

45mm

Lug-to-Lug

54mm

47.7mm

lowest

Thickness

12.5mm

lowest

13.2mm

Water Resistance

300m

highest

200m

Power Reserve

n/a

41h

MSRP

$2,852

$650

lowest

Movement

Sellita SW200-1

Seiko 4R36

Case

5 specs
Diameter
44mm
45mm
Thickness
12.5mm
13.2mm
Lug-to-Lug
54mm
47.7mm
Material
titanium
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

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

Movement

3 specs
Caliber
Sellita SW200-1
Seiko 4R36
Power Reserve
0h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$2,852
$650
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Mühle-Glashütte Sea-Timer BlackMotion

Owners widely praise the Mühle-Glashütte Sea-Timer BlackMotion as a rugged, durable, and unique tool watch with a stealthy black PVD case and a functional, no-nonsense design. Some owners and reviewers find the font used for the model name text on the dial to be jarringly bright, and the date window placement at 4 o'clock is also criticized. One owner notes the watch appears larger in person than a 42mm model. Accuracy is reported at +5 seconds per day by one owner. Overall, owners and reviewers rate the Mühle-Glashütte Sea-Timer BlackMotion highly for its robust build and stealthy aesthetic, despite minor criticisms of dial text and date window placement.

Seiko King Turtle

Seiko King Turtle is widely praised for its excellent value and robust design, featuring the reliable 4R36 movement. Owners appreciate its superior lume and a bezel action described as smoother and more precise than some siblings. The 45mm cushion case, while substantial, wears smaller than expected due to its shape and short lug-to-lug distance. On balance, owners and reviewers rate the Seiko King Turtle highly for its proven design and overall value proposition.

From video reviewers

The King Turtle's ceramic bezel and sapphire crystal are significant upgrades. Reviewers noted a slight price increase for these features.