BOLDR Supply Co. GMT TarangirevsSan Martin BB 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.

BOLDR Supply Co. GMT Tarangire at true scale

GMT Tarangire

San Martin BB GMT at true scale

BB GMT

Diameter

40mm

39mm

Thickness

12.6mm

n/a

Water Resistance

200m

highest

100m

MSRP

$469

$269

lowest

Movement

Seiko NH34

Seiko NH34

Case

5 specs
Diameter
40mm
39mm
Thickness
12.6mm
n/a
Lug-to-Lug
n/a
n/a
Lug Width
20mm
n/a
Water Resistance
200m
100m

Pricing

1 specs
MSRP
$469
$269
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Reviews

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

BOLDR Supply Co. GMT Tarangire

Owners widely praise the BOLDR Supply Co. GMT Tarangire for its appealing design and less cluttered dial compared to some alternatives, with one owner noting good finishing for the price. The GMT functionality is a highlight, and the use of the Seiko NH34 movement is appreciated. One owner finds the 40mm case size acceptable, while another prefers smaller cases. Overall, owners rate the BOLDR Supply Co. GMT Tarangire highly for its design and GMT functionality at the price point.

San Martin BB GMT

Owners are broadly enthusiastic about the San Martin BB GMT. One calls the design a handsome mashup of the Black Bay Pro and Explorer 2 that looks rugged yet can be dressed up, and another, after a couple of weeks of wear, says it wears much like a Tudor BB58. Praise for finishing is specific: one owner was struck by the polishing and craftsmanship straight out of the box, while another calls it a steal at €260 for a 20 ATM watch with sapphire crystal, anti-reflective coating, a Seiko GMT movement, and an on-the-fly adjustable clasp. Some owners dislike the clasp as big and clunky, and one reports that screw-down crown threads wouldn't seat and that the brand refused a return until AliExpress refunded him. A few note that later pieces are pricier and often need regulation. Overall, owners rate the San Martin BB GMT highly for its value and finishing, with build consistency and the clasp as the main reservations.