Side by side

Seiko Prospex LX linevsSpinnaker Spence 300

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

Prospex LX line
SeikoProspex LX line
MSRP $5,500
Spence 300
SpinnakerSpence 300
MSRP $650

At a glance

15 of 29 specs differ
Diameter
Prospex LX line44.8mm
Spence 30040mm
Power Reserve
Prospex LX line72h
Spence 30040h
Water Resistance
Prospex LX line200m
Spence 300300m
MSRP
Prospex LX line$5,500
Spence 300$650

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
44.8mm
40mm
Thickness
14.7mm
11.5mm
Lug-to-Lug
50.9mm
48mm
Lug Width
22mm
20mm
Material
Titanium
316L Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Super-clear coating
Inner
Dial Color
Black
Aquamarine
Lume
LumiBrite on hands and index(es)
None

Movement

4 specs
Caliber
5R66
SII NH35A
Type
Spring Drive
Automatic
Power Reserve
72h
40h
Jewels
30
25

Pricing

1 specs
MSRP
$5,500
$650

Follow this matchup

Get a note when Seiko Prospex LX line vs Spinnaker Spence 300 gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Seiko Prospex LX line

Owners widely report the dial's blue-green sunburst is phenomenal, and the sapphire glass features blue AR coating. Some owners feel the high price limits discounts and sales, with one AD noting extremely low sales due to the cost. One owner reported DLC peeling off a two-week-old watch, and another noted quality control issues like bezel inserts and fallen second hands. On balance, owners consider the Seiko Prospex LX line a nicely built watch, though pricing led to poor sales and its discontinuation.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.