Side by side

Seestern S446 GMTvsSpinnaker Hull Riviera

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

S446 GMT
SeesternS446 GMT
MSRP $299
Hull Riviera
SpinnakerHull Riviera
MSRP $169

At a glance

13 of 29 specs differ
Diameter
S446 GMT39.5mm
Hull Riviera42mm
Power Reserve
S446 GMT41hh
Hull Riviera40h
Water Resistance
S446 GMT100m
Hull Riviera100m
MSRP
S446 GMT$299
Hull Riviera$169

Full specifications

Case

5 specs
Category
GMT
Sport
Diameter
39.5mm
42mm
Thickness
13mm
15mm
Lug-to-Lug
47mm
47.5mm
Lug Width
20mm
22mm

Crystal & Dial

2 specs
Crystal Shape
Domed
Flat
Dial Color
Cream
Blue

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
$169

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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 Riviera

Owners praise the Spinnaker Hull Riviera's build quality, highlighting its milled clasp, solid links, and effective anti-reflective coating on the sapphire crystal. The watch features a sandwich dial with Superluminova, measures 42mm in diameter, 12mm thick with a 48mm lug-to-lug span, and uses a Seiko NH35 movement. Accuracy is reported as excellent, with one owner noting a gain of only +2 seconds over seven days. The crystal is noted as being fused to the case, leading to a repair quote of $198 for a cracked crystal, a cost considered excessive by some owners relative to the watch's price. Lume is considered mediocre, and some would have preferred a 4Hz movement. Overall, owners rate the Spinnaker Hull Riviera highly for its robust build and impressive accuracy at its price point.

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