Side by side

Serica Ref. 5303 Diving ChronometervsBremont MBII

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
MBII
BremontMBII
MSRP $5,400

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
MBII43mm
Power Reserve
Ref. 5303 Diving Chronometer42h
MBII40h
Water Resistance
Ref. 5303 Diving Chronometer300m
MBII100m
MSRP
Ref. 5303 Diving Chronometer$1,768
MBII$5,400

Full specifications

Case

7 specs
Category
Diver
Pilot
Diameter
39mm
43mm
Thickness
12.2mm
Lug-to-Lug
46.5mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium (DLC coated)
Water Resistance
300m
100m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
White
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
M100 COSC
BE-36AE
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$5,400

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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.

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.

Bremont MBII

The Bremont MBII is praised for its striking, high-tech pilot's watch aesthetic, reassuring heft, and quality feel, featuring an anti-shock system and customizable barrel. Owners note its condition can be excellent with minor hairlines, and it is presented with all original boxes and papers. A drawback cited is its 38-hour power reserve compared to newer movements. Overall, owners and reviewers consider the Bremont MBII affordable and a good representation of the brand.

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