Side by side

Fortis Marinemaster M-40vsOrient Bambino Open Heart

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

Marinemaster M-40
FortisMarinemaster M-40
MSRP $3,520
Bambino Open Heart
OrientBambino Open Heart
MSRP $315

At a glance

16 of 29 specs differ
Diameter
Marinemaster M-4040mm
Bambino Open Heart40.5mm
Power Reserve
Marinemaster M-4038h
Bambino Open Heart40h
Water Resistance
Marinemaster M-40300m
Bambino Open Heart30m
MSRP
Marinemaster M-40$3,520
Bambino Open Heart$315

Full specifications

Case

6 specs
Category
Diver
Diameter
40mm
40.5mm
Thickness
13mm
12mm
Lug-to-Lug
46mm
Water Resistance
300m
30m
Caseback
Solid
Display

Crystal & Dial

5 specs
Crystal
Sapphire
Mineral
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Orange
White
Indices
Applied

Movement

4 specs
Caliber
Sellita SW220-1
FT622
Beat Rate
28,800 vph
21,600 vph
Power Reserve
38h
40h
Jewels
26
22

Pricing

1 specs
MSRP
$3,520
$315

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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.

Fortis Marinemaster M-40

Owners praise the Fortis Amber Orange for its gorgeous appearance and strong wrist presence, noting its crazy lume and 70-hour power reserve. The Doxa SUB 300T, described as having a superb, eccentric design with a highly legible dial and functional no-decompression bezel, uses an ETA 2824-2 movement. However, the SUB 300T's 42.5mm case wears large and its 14mm thickness is not ideal for dress shirts, though it boasts 1,200m water resistance. On balance, owners appreciate the Fortis Amber Orange for its striking aesthetics and impressive lume.

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.

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