BOLDR Supply Co. GMT Maasai MaravsYema Superman Worldtime GMT

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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.

GMT Maasai Mara

Superman Worldtime GMT
Diameter
40mm
39mm
Lug-to-Lug
46mm
n/a
Thickness
12.6mm
n/a
Water Resistance
200m
300m
highest
MSRP
$469
lowest
$1,549
Movement
Seiko NH34
Automatic
Case
4 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
The Yema Superman Worldtime GMT is praised for its comfortable 39mm wearability and a unique bezel-lock mechanism, with owners appreciating its premium feel and domed crystal. However, some find the aluminum bezel insert less desirable than ceramic and report a stiff bracelet clasp, with one owner noting inconsistent quality control and poor customer service. Overall, owners rate the Yema Superman Worldtime GMT highly for its comfortable 39mm wearability and unique bezel-lock mechanism, despite occasional issues with the bracelet clasp and quality control.
The "Coke" bezel and maxi dial are attractive design elements. The in-house automatic GMT movement is a French alternative to pricier GMTs.
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