Which is cheaper, the Spinnaker Croft Mid-Size Skeleton or the Longines ULTRA‑CHRON CARBON?

At MSRP the Spinnaker Croft Mid-Size Skeleton is the cheaper of the two at $425, against $5,550 for the Longines ULTRA‑CHRON CARBON — a $5,125 gap before any retailer discounting.

Which is bigger, the Spinnaker Croft Mid-Size Skeleton or the Longines ULTRA‑CHRON CARBON?

The Longines ULTRA‑CHRON CARBON wears larger at 43mm versus 40mm for the Spinnaker Croft Mid-Size Skeleton — a 3mm difference across the dial.

Which has better water resistance, the Spinnaker Croft Mid-Size Skeleton or the Longines ULTRA‑CHRON CARBON?

The Longines ULTRA‑CHRON CARBON is rated to 300m versus 100m for the Spinnaker Croft Mid-Size Skeleton.

Which has a longer power reserve, the Spinnaker Croft Mid-Size Skeleton or the Longines ULTRA‑CHRON CARBON?

The Longines ULTRA‑CHRON CARBON carries a 52-hour power reserve against 40 hours on the Spinnaker Croft Mid-Size Skeleton.

What movement does the Spinnaker Croft Mid-Size Skeleton run compared to the Longines ULTRA‑CHRON CARBON?

Both watches run automatic movements — the Spinnaker Croft Mid-Size Skeleton uses the SII NH38A and the Longines ULTRA‑CHRON CARBON uses the L836.6.

Side by side

Spinnaker Croft Mid-Size SkeletonvsLongines ULTRA‑CHRON CARBON

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

Spinnaker Croft Mid-Size Skeleton

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

MSRP $425

Longines ULTRA‑CHRON CARBON

L2.839.4.52.2

MSRP $5,550

At a glance

21 of 29 specs differ

Diameter

Croft Mid-Size Skeleton40mm

ULTRA‑CHRON CARBON43mm

Power Reserve

Croft Mid-Size Skeleton40h

ULTRA‑CHRON CARBON52h

Water Resistance

Croft Mid-Size Skeleton100m

ULTRA‑CHRON CARBON300m

MSRP

Croft Mid-Size Skeleton$425

ULTRA‑CHRON CARBON$5,550

Full specifications

Case

8 specs

Crystal & Dial

5 specs

Crystal Shape

Flat

—

AR Coating

Inner

Both sides

Dial Color

Dollar Diver

Silver

Indices

Applied

Applied indexes

Lume

None

Super-LumiNova

Movement

7 specs

Caliber

SII NH38A

L836.6

Beat Rate

28,800 vph

36,000 vph

Power Reserve

40h

52h

Jewels

Hacking

Yes

Hand-winding

Yes

Complications

None

Hours, minutes, seconds

Pricing

1 specs

MSRP

$425

$5,550

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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.

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

Longines ULTRA‑CHRON CARBON

The Longines ULTRA‑CHRON CARBON is praised for its lightweight composite case and unique "Batman" aesthetic, with its 5Hz movement widely noted for exceptional accuracy. Owners widely report the high-beat movement is the cheapest 5Hz option available. Some owners find the non-rotating bezel a relief, while others consider it a deal-breaker, noting the watch is no longer a dive watch. On balance, owners and reviewers highly rate the Longines ULTRA‑CHRON CARBON for its cool, lightweight design and the exceptional accuracy of its 5Hz movement.

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