Side by side

Seestern S446 GMTvsSpinnaker Hull Diver

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

S446 GMT
SeesternS446 GMT
MSRP $299
Hull Diver
SpinnakerHull Diver
MSRP $375

At a glance

14 of 29 specs differ
Diameter
S446 GMT39.5mm
Hull Diver42mm
Power Reserve
S446 GMT41hh
Hull Diver40h
Water Resistance
S446 GMT100m
Hull Diver300m
MSRP
S446 GMT$299
Hull Diver$375

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
39.5mm
42mm
Thickness
13mm
15mm
Lug-to-Lug
47mm
47.5mm
Lug Width
20mm
22mm
Water Resistance
100m
300m

Crystal & Dial

2 specs
Crystal Shape
Domed
Flat
Dial Color
Cream
Green

Movement

5 specs
Caliber
Seiko NH34A GMT
SII NH35A
Beat Rate
3 vph
28,800 vph
Power Reserve
41hh
40h
Jewels
24
25
Complications
GMT, Date
None

Pricing

1 specs
MSRP
$299
$375

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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 Hull Diver

The Spinnaker Hull Diver is widely praised for its excellent build quality, featuring a milled clasp, solid links, and a strong anti-reflective coating on its sapphire crystal. Owners highlight its value, with one calling it one of their best affordable watches at $170, and appreciate the dual-part case construction that contributes to a reduced thickness. The blue dial is noted for its attractive play of light, and the screw-down crown is easy to operate. However, the lume is considered average, and some desire a higher beat movement. On balance, owners rate the Spinnaker Hull Diver highly for its robust construction and strong value proposition at its price point.

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