Which is cheaper, the Formex Reef 42 mm or the Tudor Pelagos Ultra?

At MSRP the Formex Reef 42 mm is the cheaper of the two at $2,414, against $6,900 for the Tudor Pelagos Ultra — a $4,486 gap before any retailer discounting.

Which is bigger, the Formex Reef 42 mm or the Tudor Pelagos Ultra?

The Formex Reef 42 mm wears larger at 42mm versus 40mm for the Tudor Pelagos Ultra — a 2mm difference across the dial.

Which has better water resistance, the Formex Reef 42 mm or the Tudor Pelagos Ultra?

The Tudor Pelagos Ultra is rated to 1000m versus 300m for the Formex Reef 42 mm.

Which has a longer power reserve, the Formex Reef 42 mm or the Tudor Pelagos Ultra?

The Tudor Pelagos Ultra carries a 65-hour power reserve against 56 hours on the Formex Reef 42 mm.

What movement does the Formex Reef 42 mm run compared to the Tudor Pelagos Ultra?

Both watches run automatic movements — the Formex Reef 42 mm uses the Sellita SW300-1 and the Tudor Pelagos Ultra uses the MT5612-U.

Side by side

Formex Reef 42 mmvsTudor Pelagos Ultra

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

Formex Reef 42 mm

reef-42mm-automatic-cosc-300m-black

MSRP $2,414

Tudor Pelagos Ultra

m2543c1a7nu-0001

MSRP $6,900

At a glance

18 of 29 specs differ

Diameter

Reef 42 mm42mm

Pelagos Ultra40mm

Power Reserve

Reef 42 mm56h

Pelagos Ultra65h

Water Resistance

Reef 42 mm300m

Pelagos Ultra1,000m

MSRP

Reef 42 mm$2,414

Pelagos Ultra$6,900

Full specifications

Case

7 specs

Diameter

42mm

40mm

Thickness

11.4mm

14.5mm

Lug-to-Lug

47mm

46mm

Material

Stainless Steel

Titanium

Finish

Brushed and polished

Satin

Water Resistance

300m

1000m

Caseback

Solid

Solid screw-down

Crystal & Dial

4 specs

Crystal Shape

Flat

—

AR Coating

Inner

—

Indices

Applied

—

Lume

Super-LumiNova

None

Movement

6 specs

Caliber

Sellita SW300-1

MT5612-U

Beat Rate

28,800 vph

0 vph

Power Reserve

56h

65h

Jewels

Hacking

Yes

Hand-winding

Yes

Pricing

1 specs

MSRP

$2,414

$6,900

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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.

Formex Reef 42 mm

The Formex Reef 42 mm is widely praised for its comfortable bracelet featuring a micro-adjust clasp, COSC-certified Sellita movement, and excellent build quality. Owners appreciate the gradient dial's visual appeal and the overall wearability. Some owners note the seconds hand does not perfectly align with markers, and one owner found the lugs' taper hinders third-party strap fit. The bracelet's length and sporty design are noted as limiting versatility by some. On balance, owners and reviewers rate the Formex Reef 42 mm highly for its impressive wearability and value at the price point.

The Tudor Pelagos Ultra is praised for its 1000 meters of water resistance, METAS-certified Calibre MT5612-U movement, and fully lumed dial and bezel. Reviewers highlight its titanium case and self-adjusting clasp as key features. The Tudor Pelagos Ultra is slightly larger at 43mm than some other models in the line but wears comfortably. Overall, owners and reviewers rate the Tudor Pelagos Ultra highly for its technical specifications and comfortable wearability as a flagship dive watch.

From video reviewers

The Tudor Pelagos Ultra's all-titanium construction provides a lightweight and durable case. One weakness is the lack of lume brightness. Reviewers disagree on whether the helium release valve is a notable feature or a drawback for a more streamlined design.

Hodinkee

Monochrome

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