Side by side

Seiko Prospex SeavsDOXA SUB 300

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.

Seiko Prospex Sea

Seiko Prospex Sea owners and reviewers praise its Marinemaster-style aesthetic, excellent case finishing, and impressive LumiBrite lume. The watch is powered by the 6R15 movement with a 50-hour power reserve and comes with both a steel bracelet and a silicone strap. Some owners find the Seiko Prospex Sea to be a great value and a suitable first "proper" watch, while others report it is uncomfortably big, thick, and heavy on smaller wrists. Reviewers note the GMT function is secondary with a less prominent scale, and the bezel's quieter clicks may not appeal to all. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its classic design and finishing at its price point.

DOXA SUB 300

The DOXA SUB 300 is widely praised for its wearability and vibrant color options, with reviewers noting its compelling charm and modern updates like improved lume and a meter-based bezel. Owners report the DOXA SUB 300 wears comfortably, with its cushion case and beads-of-rice bracelet contributing to a smaller perceived size. The COSC-certified ETA 2824-2 movement is noted for its accuracy, with one owner seeing it gain only +1 second in three days. However, some owners flag issues with the bracelet's end links sticking out and a sharp clasp edge, while one reviewer found the lume to be a disappointment. The polished bezel surface is also noted as prone to scratches. Overall, owners and reviewers rate the DOXA SUB 300 highly for its wearability and distinct design, despite some minor finishing concerns.

At a glance

14 of 29 specs differ
Diameter
Prospex Sea43.5mm
SUB 30042.5mm
Power Reserve
Prospex Sea70h
SUB 30038h
Water Resistance
Prospex Sea200m
SUB 300300m
MSRP
Prospex Sea$1,500
SUB 300$2,890

Full specifications

Case

6 specs
Diameter
43.5mm
42.5mm
Thickness
13.3mm
0mm
Lug-to-Lug
51mm
0mm
Lug Width
22mm
0mm
Material
Titanium
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal Shape
Domed
AR Coating
Anti-reflective coating on inner surface
Yes
Dial Color
Aquamarine
Lume
LumiBrite on hands and index(es)
Super-LumiNova

Movement

3 specs
Caliber
Seiko 6R35
Power Reserve
70h
38h
Jewels
24
0

Pricing

1 specs
MSRP
$1,500
$2,890
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