Side by side

Bremont Supermarine 300MvsSeiko Prospex Land Seiko Boutique exclusive model

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

Supermarine 300M
BremontSupermarine 300M
MSRP $3,550

At a glance

15 of 29 specs differ
Diameter
Supermarine 300M40mm
Prospex Land Seiko Boutique exclusive model38mm
Power Reserve
Supermarine 300M40h
Prospex Land Seiko Boutique exclusive model70h
Water Resistance
Supermarine 300M300m
Prospex Land Seiko Boutique exclusive model200m
MSRP
Supermarine 300M$3,550
Prospex Land Seiko Boutique exclusive model$875

Full specifications

Case

7 specs
Category
Diver
Field
Diameter
40mm
38mm
Thickness
12mm
12.9mm
Lug-to-Lug
46.2mm
Lug Width
20mm
19mm
Material
904L Stainless Steel
Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

4 specs
Crystal Shape
Flat
Curved
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Green
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
BE-92AE
6R35
Power Reserve
40h
70h
Jewels
25
24

Pricing

1 specs
MSRP
$3,550
$875

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What people say

Owners + reviewers, side by side

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

Bremont Supermarine 300M

The Bremont Supermarine 300M is praised for its comfortable 40mm and 42mm case sizes, with owners noting the 42mm wears well on smaller wrists due to its lug design. One owner highlights the 13mm thinness of the 40mm case, considered compact for a 300m diver. The watch is priced at $1375. On balance, owners and reviewers appreciate the Bremont Supermarine 300M for its wearability and compact dimensions, especially for a dive watch.

Seiko Prospex Land Seiko Boutique exclusive model

The Seiko Prospex Land is widely praised for its attractive and legible tool watch design, offering solid build quality at a fair price. Reviewers note the smooth operation of its internal rotating bezel, while owners highlight the satisfying, smooth, and precise bidirectional bezel action. The steel case is described as having a durable look with decent finishing. On balance, owners and reviewers rate the Seiko Prospex Land highly for its attractive, legible design and solid build quality at a fair price.

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