BOLDR Supply Co. GMT Maasai MaravsGrand Seiko SBGM245

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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.

BOLDR Supply Co. GMT Maasai Mara at true scale

GMT Maasai Mara

Grand Seiko SBGM245 at true scale

SBGM245

Diameter

40mm

40.5mm

Lug-to-Lug

46mm

lowest

48.6mm

Thickness

12.6mm

lowest

14.4mm

Water Resistance

200m

200m

Power Reserve

n/a

72h

MSRP

$469

lowest

$6,100

Movement

Seiko NH34

Grand Seiko 9S66

Case

3 specs
Diameter
40mm
40.5mm
Thickness
12.6mm
14.4mm
Lug-to-Lug
46mm
48.6mm

Crystal & Dial

2 specs
AR Coating
n/a
Yes
Dial Color
n/a
n/a

Movement

2 specs
Caliber
Seiko NH34
Grand Seiko 9S66
Power Reserve
0h
72h

Pricing

1 specs
MSRP
$469
$6,100
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Reviews

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

BOLDR Supply Co. GMT Maasai Mara

Owners widely praise the BOLDR Supply Co. GMT Maasai Mara for its accessible GMT complication and the value it offers at its price point, with reviewers highlighting its 40mm stainless-steel case, unique California dial, and 200m water resistance as suitable for everyday wear and travel. Some owners appreciate its less polished case finish and a dial that feels less cluttered than alternatives, while others note its titanium construction contributes to a lightweight feel. One owner expresses curiosity about the long-term performance of the Seiko NH34 movement. On balance, owners and reviewers rate the BOLDR Supply Co. GMT Maasai Mara highly for its practical GMT functionality and appealing design at an accessible price.

Grand Seiko SBGM245

Owners widely praise the Grand Seiko SBGM245 as a compelling mechanical GMT, blending sport and luxury with notable workmanship. Some owners find its 40.5mm case size and 14.4mm thickness wearable, while others consider it too large and prefer slimmer alternatives. The polished surfaces are noted to scratch easily, suggesting it is best suited for dressier occasions. Accuracy figures vary, with one owner reporting an average gain of two seconds per day, while others express a desire for a thinner case and a clasp with quick extension. Overall, owners rate the Grand Seiko SBGM245 highly for its mechanical GMT functionality and craftsmanship, despite some reservations about its size and scratch resistance.

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