Side by side

Bremont MBIIIvsSeestern S446 GMT

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

MBIII
BremontMBIII
MSRP $5,450
S446 GMT
SeesternS446 GMT
MSRP $299

At a glance

14 of 29 specs differ
Diameter
MBIII43mm
S446 GMT39.5mm
Power Reserve
MBIII40h
S446 GMT41hh
Water Resistance
MBIII100m
S446 GMT100m
MSRP
MBIII$5,450
S446 GMT$299

Full specifications

Case

6 specs
Category
Pilot
GMT
Diameter
43mm
39.5mm
Thickness
14.5mm
13mm
Lug-to-Lug
47mm
Lug Width
14.5mm
20mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Crystal Shape
Flat
Domed
Dial Color
Armoured II
Cream

Movement

5 specs
Caliber
BE-36AE
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$5,450
$299

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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 MBIII

The Bremont MBIII is praised for its versatile pilot's watch design, excellent dial visibility, and shock-resistant chronometer movement housed in a 43mm Trip-Tick case with a Faraday cage. Owners appreciate its unique origin story tied to Martin-Baker ejection seats and the brand's distinctive design language, with some noting the orange barrel accent. The watch features a 24-hour scale, 100m water resistance, and an improved Roto Click bezel. However, the "DANGER EJECTION SEAT" dial text is considered divisive, and its ETA 2892 GMT movement is not a "true" GMT as only the 24-hour hand is independently adjustable. On balance, owners and reviewers value the Bremont MBIII for its robust build and unique aviation-inspired narrative.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

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