Side by side

Formex Reef 42 mmvsSeestern S446 GMT

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

Reef 42 mm
FormexReef 42 mm
MSRP $2,414
S446 GMT
SeesternS446 GMT
MSRP $299

At a glance

15 of 29 specs differ
Diameter
Reef 42 mm42mm
S446 GMT39.5mm
Power Reserve
Reef 42 mm56h
S446 GMT41hh
Water Resistance
Reef 42 mm300m
S446 GMT100m
MSRP
Reef 42 mm$2,414
S446 GMT$299

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
42mm
39.5mm
Thickness
11.4mm
13mm
Lug Width
22mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal Shape
Flat
Domed
Dial Color
Black
Cream
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
Sellita SW300-1
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
56h
41hh
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$2,414
$299

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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.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

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