Which is cheaper, the Serica Ref. 5330 Diving Chronometer Date or the Bremont Supermarine 300M?

At MSRP the Serica Ref. 5330 Diving Chronometer Date is the cheaper of the two at $2,005, against $3,550 for the Bremont Supermarine 300M — a $1,545 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5330 Diving Chronometer Date or the Bremont Supermarine 300M?

The Bremont Supermarine 300M wears larger at 40mm versus 39mm for the Serica Ref. 5330 Diving Chronometer Date — a 1mm difference across the dial.

Which has a longer power reserve, the Serica Ref. 5330 Diving Chronometer Date or the Bremont Supermarine 300M?

The Serica Ref. 5330 Diving Chronometer Date carries a 42-hour power reserve against 40 hours on the Bremont Supermarine 300M.

What movement does the Serica Ref. 5330 Diving Chronometer Date run compared to the Bremont Supermarine 300M?

Both watches run automatic movements — the Serica Ref. 5330 Diving Chronometer Date uses the SoProd M100 and the Bremont Supermarine 300M uses the BE-92AE.

Side by side

Serica Ref. 5330 Diving Chronometer DatevsBremont Supermarine 300M

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

Serica Ref. 5330 Diving Chronometer Date

5330-chronometre-plongee-date

MSRP $2,005

Bremont Supermarine 300M

sm40-nd-ss-gn-b

MSRP $3,550

At a glance

11 of 29 specs differ

Diameter

Ref. 5330 Diving Chronometer Date39mm

Supermarine 300M40mm

Power Reserve

Ref. 5330 Diving Chronometer Date42h

Supermarine 300M40h

Water Resistance

Ref. 5330 Diving Chronometer Date300m

Supermarine 300M300m

MSRP

Ref. 5330 Diving Chronometer Date$2,005

Supermarine 300M$3,550

Full specifications

Case

4 specs

Diameter

39mm

40mm

Thickness

12.2mm

12mm

Lug-to-Lug

46.5mm

—

Material

Stainless Steel

904L Stainless Steel

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Black

Green

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

SoProd M100

BE-92AE

Power Reserve

42h

40h

Complications

COSC, Date

None

Pricing

1 specs

MSRP

$2,005

$3,550

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