Side by side

Seiko Prospex SeavsDOXA SUB 300

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

Prospex Sea
SeikoProspex Sea
MSRP $1,100
SUB 300
DOXASUB 300
MSRP $2,890
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 models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work 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

11 of 29 specs differ
Diameter
Prospex Sea41.3mm
SUB 30042.5mm
Power Reserve
Prospex Sea72h
SUB 30038h
Water Resistance
Prospex Sea300m
SUB 300300m
MSRP
Prospex Sea$1,100
SUB 300$2,890

Full specifications

Case

3 specs
Diameter
41.3mm
42.5mm
Thickness
12.5mm
12mm
Lug-to-Lug
48.2mm
46mm

Crystal & Dial

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

Movement

3 specs
Caliber
6R55
Power Reserve
72h
38h
Jewels
24
25

Pricing

1 specs
MSRP
$1,100
$2,890
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