Side by side

Oris Big Crown DiamondsvsFormex Reef 42 mm

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

Big Crown Diamonds
OrisBig Crown Diamonds
MSRP $3,300
Reef 42 mm
FormexReef 42 mm
MSRP $2,414

At a glance

17 of 29 specs differ
Diameter
Big Crown Diamonds34mm
Reef 42 mm42mm
Power Reserve
Big Crown Diamonds42 hoursh
Reef 42 mm56h
Water Resistance
Big Crown Diamonds50m
Reef 42 mm300m
MSRP
Big Crown Diamonds$3,300
Reef 42 mm$2,414

Full specifications

Case

8 specs
Category
Diver
Diameter
34mm
42mm
Thickness
11.4mm
Lug-to-Lug
47mm
Lug Width
17mm
22mm
Finish
Brushed and polished
Water Resistance
50m
300m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Indices
Applied
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
531
Sellita SW300-1
Beat Rate
4 vph
28,800 vph
Power Reserve
42 hoursh
56h
Jewels
25

Pricing

1 specs
MSRP
$3,300
$2,414

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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.

Oris Big Crown Diamonds

Owners widely praise the Oris Big Crown Diamonds for its timeless design, vintage charm, and recognizable details like cathedral hands and the pointer date function. Reviewers highlight the stunning gradient dial and the "Bullseye" tuxedo dial as particularly beautiful. The 38mm case is considered versatile, and the watch offers remarkable value. However, some owners note the standard Sellita movement has a short power reserve and plain finishing, and the strap is not durable. A reviewer points out slightly imperfect Super-LumiNova printing on the hour numerals, and one owner finds the two-tone bracelet overly flashy. On balance, owners and reviewers rate the Oris Big Crown Diamonds highly for its unique design and value at its price point.

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.

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