Side by side

Seiko MonstervsDOXA 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 Monster

Owners widely praise the Seiko Prospex Sea for its excellent value, robust build, and superb lume, with many noting its comfortable wearability. Reviewers consistently highlight its impressive finishing and classic dive watch design, often comparing it favorably to older models. Some owners find the size substantial, with one noting it as big, thick, and heavy on a 6.5-inch wrist, while others find it perfect. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its exceptional value and robust, classic dive watch design.

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
Monster42.4mm
SUB 30042.5mm
Power Reserve
Monster41h
SUB 30038h
Water Resistance
Monster200m
SUB 300300m
MSRP
Monster$550
SUB 300$2,890

Full specifications

Case

5 specs
Diameter
42.4mm
42.5mm
Thickness
13.4mm
0mm
Lug-to-Lug
49.4mm
0mm
Lug Width
20mm
0mm
Water Resistance
200m
300m

Crystal & Dial

5 specs
Crystal
Hardlex
Sapphire
Crystal Shape
Domed
AR Coating
Yes
Dial Color
Aquamarine
Lume
LumiBrite on hands, index(es) and bezel
Super-LumiNova

Movement

3 specs
Caliber
4R36
Power Reserve
41h
38h
Jewels
24
0

Pricing

1 specs
MSRP
$550
$2,890
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