Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Aigi Watches NORTHERN LIGHTS AUTOMATIC?

At MSRP the Aigi Watches NORTHERN LIGHTS AUTOMATIC is the cheaper of the two at $443, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,325 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Aigi Watches NORTHERN LIGHTS AUTOMATIC?

The Aigi Watches NORTHERN LIGHTS AUTOMATIC wears larger at 43mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 4mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Aigi Watches NORTHERN LIGHTS AUTOMATIC?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 200m for the Aigi Watches NORTHERN LIGHTS AUTOMATIC.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Aigi Watches NORTHERN LIGHTS AUTOMATIC?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Aigi Watches NORTHERN LIGHTS AUTOMATIC.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Aigi Watches NORTHERN LIGHTS AUTOMATIC?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Aigi Watches NORTHERN LIGHTS AUTOMATIC uses the Seiko NH35A.

Side by side

Serica Ref. 5303 Diving ChronometervsAigi Watches NORTHERN LIGHTS AUTOMATIC

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

Add a watch

Serica Ref. 5303 Diving Chronometer

5303-1-diving-chronometer

MSRP $1,768

Aigi Watches NORTHERN LIGHTS AUTOMATIC

northern-lights

MSRP $443

Buy from Serica ↗

Buy used on eBay ↗

Buy from Aigi Watches ↗

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At a glance

13 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

NORTHERN LIGHTS AUTOMATIC43mm

Power Reserve

Ref. 5303 Diving Chronometer42h

NORTHERN LIGHTS AUTOMATIC40h

Water Resistance

Ref. 5303 Diving Chronometer300m

NORTHERN LIGHTS AUTOMATIC200m

MSRP

Ref. 5303 Diving Chronometer$1,768

NORTHERN LIGHTS AUTOMATIC$443

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

—

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

Seiko NH35A

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$443

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At a glance

Full specifications

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