Side by side

Orient Bambino Open HeartvsFormex Reef 39.5 mm

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

Bambino Open Heart
OrientBambino Open Heart
MSRP $315
Reef 39.5 mm
FormexReef 39.5 mm
MSRP $2,230

At a glance

18 of 29 specs differ
Diameter
Bambino Open Heart40.5mm
Reef 39.5 mm39.5mm
Power Reserve
Bambino Open Heart40h
Reef 39.5 mm56h
Water Resistance
Bambino Open Heart30m
Reef 39.5 mm300m
MSRP
Bambino Open Heart$315
Reef 39.5 mm$2,230

Full specifications

Case

7 specs
Category
Diver
Diameter
40.5mm
39.5mm
Thickness
12mm
11mm
Lug-to-Lug
46mm
45.5mm
Lug Width
21mm
22mm
Water Resistance
30m
300m
Caseback
Display
Solid

Crystal & Dial

6 specs
Crystal
Mineral
Sapphire
Crystal Shape
Flat
AR Coating
Inner
Dial Color
White
Bahama Blue
Indices
Applied
Lume
None
Super-LumiNova

Movement

4 specs
Caliber
FT622
Sellita SW300-1
Beat Rate
21,600 vph
28,800 vph
Power Reserve
40h
56h
Jewels
22
25

Pricing

1 specs
MSRP
$315
$2,230

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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.

Orient Bambino Open Heart

Owners widely praise the Orient Bambino Open Heart for its dressy style, clean dial, and reliable in-house F6724 automatic movement with hacking and hand-winding. Reviewers and owners highlight its value proposition, with one owner noting it remains a regular wear even after acquiring pricier watches. Some owners find the build quality and stock strap less premium, with one noting the mineral crystal is prone to scratching and another that the movement can be noisy. The 21mm lug width is cited as making strap swapping slightly more complicated. Overall, owners and reviewers rate the Orient Bambino Open Heart highly for its dressy aesthetic and in-house movement at its price point.

Formex Reef 39.5 mm

The Formex Reef 39.5 mm is widely praised for its refined finishing, comfortable and well-proportioned case design, and impressive specifications for its price point, including COSC-certified Sellita SW300-1 movement and 300m water resistance. Owners and reviewers highlight the tool-less micro-adjust clasp and quick-release spring bars as practical features. Some reviewers note that the 22mm lug width feels slightly disproportionate to the smaller case, and the bracelet could benefit from more taper, though this is a point of contention for some owners who value the overall package. A prototype crown protrusion issue is noted as being addressed for production. On balance, owners and reviewers rate the Formex Reef 39.5 mm highly for its excellent value and well-executed design.

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