Side by side

Serica Ref. 5303 Diving ChronometervsBreitling Superocean Heritage B20 Automatic

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

What people say

Owners + reviewers, side by side

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

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Breitling Superocean Heritage B20 Automatic

Owners widely praise the Breitling Superocean Heritage B20 Automatic for its gorgeous aesthetics, with many singling out the popping blue dial and the overall quality from movement to finish. The 42mm case is considered a favorite for its wearability and fit on many wrists, and its versatility for dressing up or down is frequently highlighted. The clasp on Breitling's rubber straps is a noted favorite. Some owners report a "crunchy" bezel rotation, deeming it disappointing for the price, and a few find the watch too heavy or chunky, wishing for a smaller option, though others appreciate its substantial presence. Overall, owners rate the Breitling Superocean Heritage B20 Automatic highly for its appealing design and comfortable wearability on a variety of straps.

At a glance

18 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Superocean Heritage B20 Automatic42mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Superocean Heritage B20 Automatic70h
Water Resistance
Ref. 5303 Diving Chronometer300m
Superocean Heritage B20 Automatic200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Superocean Heritage B20 Automatic$22,650

Full specifications

Case

7 specs
Diameter
39mm
42mm
Thickness
12.2mm
14.35mm
Lug-to-Lug
46.5mm
Material
Stainless Steel
18kt Pink Gold
Finish
Brushed and polished
Stainless steel
Water Resistance
300m
200m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Yes
Dial Color
Enamel Black
Indices
Applied
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
M100 COSC
Breitling B20 (Manufacture)
Beat Rate
28,800 vph
0 vph
Power Reserve
42h
70h
Jewels
25
0
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$22,650
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