Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Helgray Bomber Mk2 - Commander?

At MSRP the Helgray Bomber Mk2 - Commander is the cheaper of the two at $349, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,419 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Helgray Bomber Mk2 - Commander?

The Helgray Bomber Mk2 - Commander wears larger at 40mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 1mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Helgray Bomber Mk2 - Commander?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 100m for the Helgray Bomber Mk2 - Commander.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Helgray Bomber Mk2 - Commander?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Helgray Bomber Mk2 - Commander.

Side by side

Serica Ref. 5303 Diving ChronometervsHelgray Bomber Mk2 - Commander

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

Serica Ref. 5303 Diving Chronometer

5303-1-diving-chronometer

MSRP $1,768

Helgray Bomber Mk2 - Commander

bomber-mk2-commander

MSRP $349

At a glance

12 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Bomber Mk2 - Commander40mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Bomber Mk2 - Commander40h

Water Resistance

Ref. 5303 Diving Chronometer300m

Bomber Mk2 - Commander100m

MSRP

Ref. 5303 Diving Chronometer$1,768

Bomber Mk2 - Commander$349

Full specifications

Case

5 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Black

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

—

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$349

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