Which is cheaper, the Serica Ref. 5303 Diving Chronometer or the Spinnaker Croft Mid-Size Skeleton?

At MSRP the Spinnaker Croft Mid-Size Skeleton is the cheaper of the two at $425, against $1,768 for the Serica Ref. 5303 Diving Chronometer — a $1,343 gap before any retailer discounting.

Which is bigger, the Serica Ref. 5303 Diving Chronometer or the Spinnaker Croft Mid-Size Skeleton?

The Spinnaker Croft Mid-Size Skeleton 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 Spinnaker Croft Mid-Size Skeleton?

The Serica Ref. 5303 Diving Chronometer is rated to 300m versus 100m for the Spinnaker Croft Mid-Size Skeleton.

Which has a longer power reserve, the Serica Ref. 5303 Diving Chronometer or the Spinnaker Croft Mid-Size Skeleton?

The Serica Ref. 5303 Diving Chronometer carries a 42-hour power reserve against 40 hours on the Spinnaker Croft Mid-Size Skeleton.

What movement does the Serica Ref. 5303 Diving Chronometer run compared to the Spinnaker Croft Mid-Size Skeleton?

Both watches run automatic movements — the Serica Ref. 5303 Diving Chronometer uses the M100 COSC and the Spinnaker Croft Mid-Size Skeleton uses the SII NH38A.

Side by side

Serica Ref. 5303 Diving ChronometervsSpinnaker Croft Mid-Size Skeleton

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

Spinnaker Croft Mid-Size Skeleton

croft-mid-size-skeleton-automatic-spongebob-squarepants-peek-a-boo-limited-edition-dollar-diver-sp-5152-01

MSRP $425

At a glance

13 of 29 specs differ

Diameter

Ref. 5303 Diving Chronometer39mm

Croft Mid-Size Skeleton40mm

Power Reserve

Ref. 5303 Diving Chronometer42h

Croft Mid-Size Skeleton40h

Water Resistance

Ref. 5303 Diving Chronometer300m

Croft Mid-Size Skeleton100m

MSRP

Ref. 5303 Diving Chronometer$1,768

Croft Mid-Size Skeleton$425

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Inner

Dial Color

Enamel Black

Dollar Diver

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

M100 COSC

SII NH38A

Power Reserve

42h

40h

Complications

COSC

None

Pricing

1 specs

MSRP

$1,768

$425

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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.

WatchUSeek·3

Reddit·2

Spinnaker Croft Mid-Size Skeleton

The Spinnaker Croft Mid-Size Skeleton is noted for its 40mm steel case, sapphire crystal, and 150m water resistance. One owner reports strong performance from the TMI NH70 movement at -3 seconds per day, with very nice lume. On balance, owners find the Spinnaker Croft Mid-Size Skeleton to be a pretty nice option, particularly for its movement performance and lume.

WatchUSeek·2

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