Side by side

Bremont ALT1-WTvsSeiko Prospex Sea

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

ALT1-WT
BremontALT1-WT
MSRP $5,900
Prospex Sea
SeikoProspex Sea
MSRP $625
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.

Seiko Prospex Sea

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

At a glance

13 of 29 specs differ
Diameter
ALT1-WT43mm
Prospex Sea43.8mm
Power Reserve
ALT1-WT40h
Prospex Sea41h
Water Resistance
ALT1-WT100m
Prospex Sea200m
MSRP
ALT1-WT$5,900
Prospex Sea$625

Full specifications

Case

6 specs
Category
World Timer
Diver
Diameter
43mm
43.8mm
Thickness
16mm
12.8mm
Lug-to-Lug
48.7mm
Material
Titanium (DLC coated)
Stainless Steel
Water Resistance
100m
200m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
BE-54AE
4R35
Power Reserve
40h
41h
Jewels
25
23

Pricing

1 specs
MSRP
$5,900
$625
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