Side by side

Bremont SupernovavsSeiko 5KX

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

Supernova
BremontSupernova
MSRP $8,250
5KX
Seiko5KX
MSRP $350

At a glance

13 of 29 specs differ
Diameter
Supernova41mm
5KX42.5mm
Power Reserve
Supernova40h
5KX41h
Water Resistance
Supernova100m
5KX100m
MSRP
Supernova$8,250
5KX$350

Full specifications

Case

6 specs
Category
Chronograph
Diver
Diameter
41mm
42.5mm
Thickness
14.4mm
13.4mm
Lug-to-Lug
46mm
Lug Width
14.4mm
22mm
Material
316L Stainless Steel (DLC coated)
Stainless Steel

Crystal & Dial

3 specs
Crystal
Sapphire
Hardlex
Dial Color
Chronograph Bracelet
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
4R36
Power Reserve
40h
41h
Jewels
25
24

Pricing

1 specs
MSRP
$8,250
$350

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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 Supernova

The Bremont Supernova is praised for its new ENG375 movement, big date, and power reserve indicator, with its 40mm steel case featuring mixed finishing and an integrated bracelet. Owners note good but not great lume, well-balanced proportions, and a premium feel for its price, despite a 173-gram weight. Some community members find the design derivative and the £8,000 price tag overly optimistic, with mixed views on the date window and crown guard. The proprietary Trip-Tick case construction offers shock protection, and the movement provides a 65-hour power reserve. Overall, owners and reviewers highlight the integrated bracelet and proprietary movement as key strengths of the Bremont Supernova.

Seiko 5KX

Owners widely praise the Seiko 5 Sports SKX series for its strong lume and comfortable wearability, with many noting its compact feel due to a short lug-to-lug length. The NH36 movement's accuracy varies, with typical performance between +/-5 to 10 seconds per day, though some report better. A lack of screw-down crown and ISO certification are noted drawbacks for its water resistance. Some owners find the bracelet to be of cheaper construction with hollow links, and a few have reported quality control issues. The consensus is that the Seiko 5 Sports SKX series offers good value for its price, appealing to those who appreciate its tool-like nature and iconic lineage.

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