Side by side

Spinnaker Spence 300vsSunrex 321

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

What people say

Owners + reviewers, side by side

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

Spinnaker Spence 300

The Spinnaker Spence 300 is widely praised for its slim 10.9mm case and 40mm diameter, offering a comfortable and uncommon thin diver design at its price point. Reviewers and owners highlight its value, especially below $350, and its blend of retro design with modern specifications, including a 300m depth rating and a fully indexed bezel. Some owners, however, find the dial printing and bracelet finishing to be less refined, with one noting the bracelet's male end links as a drawback. The consensus is that the Spinnaker Spence 300 is highly regarded for its exceptional value and wearable dimensions, making it a strong contender for an everyday sports watch.

From video reviewers

The watch's thin 10.9mm profile for a 300m diver is a key strength. No shared weakness was identified.

Sunrex 321

The compact 37mm case size is a strength. The watch offers versatility with included FKM rubber and leather straps.

At a glance

12 of 29 specs differ
Diameter
Spence 30040mm
32138.6mm
Power Reserve
Spence 300
321
Water Resistance
Spence 300300m
321100m
MSRP
Spence 300$650
321$600

Full specifications

Case

7 specs
Category
Diver
Diameter
40mm
38.6mm
Thickness
11.5mm
14mm
Lug-to-Lug
48mm
43.5mm
Lug Width
20mm
0mm
Material
316L Stainless Steel
Aluminum
Water Resistance
300m
100m

Crystal & Dial

2 specs
AR Coating
Yes
Dial Color
Aquamarine
Black

Movement

2 specs
Caliber
NH35
Epson VS76A
Type
Automatic
Solar

Pricing

1 specs
MSRP
$650
$600
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