Which is cheaper, the Formex Reef 42 mm or the Spinnaker Spence 300?

At MSRP the Spinnaker Spence 300 is the cheaper of the two at $650, against $2,414 for the Formex Reef 42 mm — a $1,764 gap before any retailer discounting.

Which is bigger, the Formex Reef 42 mm or the Spinnaker Spence 300?

The Formex Reef 42 mm wears larger at 42mm versus 40mm for the Spinnaker Spence 300 — a 2mm difference across the dial.

Which has a longer power reserve, the Formex Reef 42 mm or the Spinnaker Spence 300?

The Formex Reef 42 mm carries a 56-hour power reserve against 40 hours on the Spinnaker Spence 300.

What movement does the Formex Reef 42 mm run compared to the Spinnaker Spence 300?

Both watches run automatic movements — the Formex Reef 42 mm uses the Sellita SW300-1 and the Spinnaker Spence 300 uses the SII NH35A.

Side by side

Formex Reef 42 mmvsSpinnaker Spence 300

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

Spinnaker Spence 300

spence-300-automatic-aquamarine-sp-5097-aa

MSRP $650

At a glance

10 of 29 specs differ

Diameter

Reef 42 mm42mm

Spence 30040mm

Power Reserve

Reef 42 mm56h

Spence 30040h

Water Resistance

Reef 42 mm300m

Spence 300300m

MSRP

Reef 42 mm$2,414

Spence 300$650

Full specifications

Case

5 specs

Diameter

42mm

40mm

Thickness

11.4mm

11.5mm

Lug-to-Lug

47mm

48mm

Lug Width

22mm

20mm

Material

Stainless Steel

316L Stainless Steel

Crystal & Dial

2 specs

Dial Color

Black

Aquamarine

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

Sellita SW300-1

SII NH35A

Power Reserve

56h

40h

Pricing

1 specs

MSRP

$2,414

$650

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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 Spinnaker Spence 300 is widely praised for its slim 10.9mm case and 40mm diameter, offering a comfortable and uncommon thin diver design at its price point. Reviewers and owners highlight its value, especially below $350, and its blend of retro design with modern specifications, including a 300m depth rating and a fully indexed bezel. Some owners, however, find the dial printing and bracelet finishing to be less refined, with one noting the bracelet's male end links as a drawback. The consensus is that the Spinnaker Spence 300 is highly regarded for its exceptional value and wearable dimensions, making it a strong contender for an everyday sports watch.

Fratello

WatchUSeek

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