Side by side

Bremont ALT1-CvsSpinnaker Dumas GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

ALT1-C
BremontALT1-C
MSRP $6,150
Dumas GMT
SpinnakerDumas GMT
MSRP $399

At a glance

8 of 29 specs differ
Diameter
ALT1-C43mm
Dumas GMT44mm
Power Reserve
ALT1-C40h
Dumas GMT40h
Water Resistance
ALT1-C100m
Dumas GMT300m
MSRP
ALT1-C$6,150
Dumas GMT$399

Full specifications

Case

5 specs
Category
Chronograph
GMT
Diameter
43mm
44mm
Thickness
16mm
15mm
Lug-to-Lug
48mm
Water Resistance
100m
300m

Crystal & Dial

1 specs
Dial Color
Regular length (15cm - 19cm wrist size)
Blue

Movement

1 specs
Caliber
BE-50AE
Seiko NH34A

Pricing

1 specs
MSRP
$6,150
$399

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What people say

Owners + reviewers, side by side

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

Bremont ALT1-C

Owners widely praise the Bremont ALT1-C for its flawless brushed case finish, attractive cream dial with excellent contrast from anthracite sub-dials, and comfortable, balanced wearability. The watch features a well-finished strap and a movement that is a joy to wind, with precise chronograph operation. Reviewers note refined feuille hands and polished Arabic numerals with a golden tinge, balancing ruggedness with elegance. The Bremont ALT1-C averages +3 seconds per day, though one reviewer flags its 16mm height as less than ideal for under-cuff wear and describes the date window as narrow. The modified Valjoux 7750 movement's rotor spin is noticeable. Overall, owners rate the Bremont ALT1-C highly for its refined aesthetics and enjoyable user experience.

Spinnaker Dumas GMT

Owners praise the Spinnaker Dumas GMT's satisfying lume, including on the crown, and good finishing, with one owner finding it wears well on a 17cm wrist. The watch features a Seiko NH34A GMT movement and a blue gradient dial. Reviewers note its 44mm diameter and 209g weight on the bracelet make it unsuitable for smaller wrists.

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