Side by side

Bremont ALT1-WTvsBremont Supermarine 300M

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

ALT1-WT
BremontALT1-WT
MSRP $5,900
Supermarine 300M
BremontSupermarine 300M
MSRP $3,550

At a glance

9 of 29 specs differ
Diameter
ALT1-WT43mm
Supermarine 300M40mm
Power Reserve
ALT1-WT40h
Supermarine 300M40h
Water Resistance
ALT1-WT100m
Supermarine 300M300m
MSRP
ALT1-WT$5,900
Supermarine 300M$3,550

Full specifications

Case

6 specs
Category
World Timer
Diver
Diameter
43mm
40mm
Thickness
16mm
12mm
Lug Width
22mm
20mm
Material
Titanium (DLC coated)
904L Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

1 specs
Dial Color
Blue
Green

Movement

1 specs
Caliber
BE-54AE
BE-92AE

Pricing

1 specs
MSRP
$5,900
$3,550

Follow this matchup

Get a note when Bremont ALT1-WT vs Bremont Supermarine 300M 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.

Bremont ALT1-WT

The Bremont ALT1-WT is widely praised for its wearable 43mm size, legible dial with a globe background, and robust hardened steel case. Reviewers and owners highlight its well-executed world timer and chronograph functions, the satisfying click of its world timer bezel, and its value for money. Some find the hands can disappear in certain light conditions, and one owner notes a slight gap between the strap and case. The Bremont ALT1-WT uses a COSC-certified ETA/Valjoux 7750-based movement with a world timer module. On balance, owners and reviewers rate the Bremont ALT1-WT highly for its practical combination of chronograph and world-time functions in a well-built, wearable package.

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.

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.