BOLDR Supply Co. GMT Maasai MaravsSeiko 5 Sports Field series

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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

Seiko 5 Sports Field series at true scale

5 Sports Field series

Diameter

40mm

39.4mm

Lug-to-Lug

46mm

lowest

47.9mm

Thickness

12.6mm

lowest

13.6mm

Water Resistance

200m

highest

100m

Power Reserve

n/a

41h

MSRP

$469

$450

lowest

Movement

Seiko NH34

Seiko 4R34

Case

4 specs
Diameter
40mm
39.4mm
Thickness
12.6mm
13.6mm
Lug-to-Lug
46mm
47.9mm
Water Resistance
200m
100m

Crystal & Dial

4 specs
Crystal
Sapphire
Hardlex
Crystal Shape
n/a
Curved
Dial Color
n/a
n/a
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko NH34
Seiko 4R34
Power Reserve
0h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$469
$450
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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.

Seiko 5 Sports Field series

The Seiko 5 Sports Field series is praised for its accessible explorer watch design and decent fit and finish for its price point. Reviewers note the inclusion of a caller GMT complication powered by the 4R34 automatic movement. On balance, owners and reviewers find the Seiko 5 Sports Field series a compelling option for its explorer aesthetic and GMT functionality at an accessible price.

From video reviewers

The prominent five-sided GMT hand enhances legibility and adds a sophisticated aesthetic to the watch. The Seiko 5 Sports Field series offers similar functionality to the Explorer 2 at a lower price, making it a valuable option. Reviewers disagree on whether it's a missed opportunity for Seiko to release this model first, with one reviewer implying it would have been a more logical addition to their lineup.

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