Which is cheaper, the Formex Reef 42 mm or the Grand Seiko SBGH281?

At MSRP the Formex Reef 42 mm is the cheaper of the two at $2,414, against $6,300 for the Grand Seiko SBGH281 — a $3,886 gap before any retailer discounting.

Which is bigger, the Formex Reef 42 mm or the Grand Seiko SBGH281?

The Formex Reef 42 mm wears larger at 42mm versus 40mm for the Grand Seiko SBGH281 — a 2mm difference across the dial.

Which has better water resistance, the Formex Reef 42 mm or the Grand Seiko SBGH281?

The Formex Reef 42 mm is rated to 300m versus 100m for the Grand Seiko SBGH281.

Which has a longer power reserve, the Formex Reef 42 mm or the Grand Seiko SBGH281?

The Formex Reef 42 mm carries a 56-hour power reserve against 55 hours on the Grand Seiko SBGH281.

What movement does the Formex Reef 42 mm run compared to the Grand Seiko SBGH281?

Both watches run automatic movements — the Formex Reef 42 mm uses the Sellita SW300-1 and the Grand Seiko SBGH281 uses the 9S85.

Side by side

Formex Reef 42 mmvsGrand Seiko SBGH281

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

Grand Seiko SBGH281

sbgh281g

MSRP $6,300

At a glance

11 of 29 specs differ

Diameter

Reef 42 mm42mm

SBGH28140mm

Power Reserve

Reef 42 mm56h

SBGH28155h

Water Resistance

Reef 42 mm300m

SBGH281100m

MSRP

Reef 42 mm$2,414

SBGH281$6,300

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

Sellita SW300-1

9S85

Power Reserve

56h

55h

Pricing

1 specs

MSRP

$2,414

$6,300

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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 Grand Seiko SBGH281 is lauded for its 44GS-style case, which exemplifies the brand's "Grammar of Design" with its sharp facets and broad case band, and its Hi-Beat 36000vph Caliber 9S85 movement, noted for an ultra-smooth second hand. Reviewers highlight the exceptional finishing, including Zaratsu polishing and hand-polished markers, as offering significant value at its €6,200 price point. The watch features an accuracy rating of +5/–3 seconds per day, a 55-hour power reserve, and 100-meter water resistance, all executed to Grand Seiko's high standards, and is limited to 1,500 pieces. Overall, reviewers rate the Grand Seiko SBGH281 highly for its iconic case design and superb finishing at its price.

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