Side by side

Breitling Superocean Heritage B20 AutomaticvsSeiko 5KX

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

Superocean Heritage B20 Automatic
BreitlingSuperocean Heritage B20 Automatic
MSRP $7,250
5KX
Seiko5KX
MSRP $350
What people say

Owners + reviewers, side by side

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

Breitling Superocean Heritage B20 Automatic

Owners and reviewers praise the Breitling Superocean Heritage B20 Automatic's refined dial, excellent anti-reflective sapphire crystal, and well-executed polished steel case and ceramic bezel; the 42mm size wears thin and compact, making it comfortable for everyday wear, and Breitling's in-house B20 movement sets it apart among luxury brands at this price point. Lume is flagged as weak for a serious dive watch, and some owners report quality-control inconsistencies—one noted misalignment between the 12 marker and bezel, another between the date window and bezel's 6 o'clock marker, and the 'Chronometre' text positioning questioned on some examples; accuracy ranges from +2 to +3 seconds per day. Strap fit varies with wrist shape; the rubber strap's fitted ends can angle too sharply on flatter wrists, while leather alternatives shift the watch's aesthetic away from its blue-heavy character. On balance, owners and reviewers rate the Breitling Superocean Heritage B

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.

At a glance

19 of 29 specs differ
Diameter
Superocean Heritage B20 Automatic42mm
5KX42.5mm
Power Reserve
Superocean Heritage B20 Automatic70h
5KX41h
Water Resistance
Superocean Heritage B20 Automatic200m
5KX100m
MSRP
Superocean Heritage B20 Automatic$7,250
5KX$350

Full specifications

Case

8 specs
Diameter
42mm
42.5mm
Thickness
14.35mm
13.4mm
Lug-to-Lug
46mm
Lug Width
20mm
22mm
Material
Stainless Steel & 18k Red Gold
Stainless Steel
Finish
Stainless steel
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

6 specs
Crystal
Sapphire
Hardlex
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Indices
Applied
Lume
None
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Breitling B20 (Manufacture)
4R36
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
41h
Jewels
0
24

Pricing

1 specs
MSRP
$7,250
$350
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.

Follow this matchup

Get a note when Breitling Superocean Heritage B20 Automatic vs Seiko 5KX gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.