Side by side

Seestern S446 GMTvsSpinnaker Bradner GMT

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

S446 GMT
SeesternS446 GMT
MSRP $299
Bradner GMT
SpinnakerBradner GMT
MSRP $299

At a glance

12 of 29 specs differ
Diameter
S446 GMT39.5mm
Bradner GMT42mm
Power Reserve
S446 GMT41hh
Bradner GMT40h
Water Resistance
S446 GMT100m
Bradner GMT180m
MSRP
S446 GMT$299
Bradner GMT$299

Full specifications

Case

5 specs
Diameter
39.5mm
42mm
Thickness
13mm
15mm
Lug-to-Lug
47mm
50mm
Lug Width
20mm
22mm
Water Resistance
100m
180m

Crystal & Dial

2 specs
Crystal Shape
Domed
Flat
Dial Color
Cream
Brown

Movement

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

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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.

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.

Spinnaker Bradner GMT

The Spinnaker Bradner GMT is praised for its awesome lume and comfortable wearability, with one owner noting the rubber strap is very comfortable and the beads of rice bracelet fits well on smaller wrists. Some find its 15mm thickness and bold colorway may not appeal to everyone, and one owner views it as more of a casual GMT with tool-watch styling than a diver. Overall, owners rate the Spinnaker Bradner GMT highly for its value and comfortable wearability.

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