Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Zelos Starfighter Chronograph?

At MSRP the Serica Ref. 5303 Diving Chronometer is the cheaper of the two at $1,768, against $1,799 for the Zelos Starfighter Chronograph — a $31 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Zelos Starfighter Chronograph?

The Zelos Starfighter Chronograph wears larger at 41mm versus 39mm for the Serica Ref. 5303 Diving Chronometer — a 2mm difference across the dial.

Which has better water resistance, the Serica Ref. 5303 Diving Chronometer or the Zelos Starfighter Chronograph?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 50m for the Zelos Starfighter Chronograph.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Zelos Starfighter Chronograph?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Zelos Starfighter Chronograph.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Zelos Starfighter Chronograph?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Zelos Starfighter Chronograph uses the ETA 2894 Élaboré.

Side by side

Serica Ref. 5303 Diving ChronometervsZelos Starfighter Chronograph

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

Zelos Starfighter Chronograph

starfighter-chronograph-spitfire

MSRP $1,799

At a glance

14 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Starfighter Chronograph41mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Starfighter Chronograph40h

Water Resistance

Ref. 5303 Diving Chronometer300m

Starfighter Chronograph50m

MSRP

Ref. 5303 Diving Chronometer$1,768

Starfighter Chronograph$1,799

Full specifications

Case

7 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Spitfire LE

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

ETA 2894 Élaboré

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$1,799

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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.

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Reddit·2

Zelos Starfighter Chronograph

Owners find the Zelos Starfighter Chronograph appealing, with one noting the beauty of the Aventurine dial and another praising the blue dial and lumed subdials. One owner is selling the watch to acquire other chronographs. Overall, owners appreciate the aesthetic appeal of the Zelos Starfighter Chronograph, particularly its dial options and lumed subdials.

WatchUSeek

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