Side by side

Orient Bambino Open HeartvsYema Skin Diver CMM.20

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

Bambino Open Heart
OrientBambino Open Heart
MSRP $315
Skin Diver CMM.20
YemaSkin Diver CMM.20
MSRP $2,372

At a glance

17 of 29 specs differ
Diameter
Bambino Open Heart40.5mm
Skin Diver CMM.2039.5mm
Power Reserve
Bambino Open Heart40h
Skin Diver CMM.2040h
Water Resistance
Bambino Open Heart30m
Skin Diver CMM.20200m
MSRP
Bambino Open Heart$315
Skin Diver CMM.20$2,372

Full specifications

Case

8 specs
Category
Diver
Diameter
40.5mm
39.5mm
Thickness
12mm
11.5mm
Lug-to-Lug
46mm
47mm
Lug Width
21mm
20mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
30m
200m
Caseback
Display
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
FT622
Yema CMM.20
Beat Rate
21,600 vph
28,800 vph
Jewels
22
25

Pricing

1 specs
MSRP
$315
$2,372

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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.

Yema Skin Diver CMM.20

Owners and reviewers widely praise the Yema Skin Diver CMM.20 for its vintage aesthetic, 39mm-39.5mm case size, and the in-house CMM.20 micro-rotor movement. The watch features a textured cream dial, sharp applied indices, and a satisfyingly over-engineered push-to-turn bi-directional bezel. The fully brushed bracelet with toolless micro-adjust clasp is highlighted as a significant improvement, though some note its extended lug-to-lug may challenge smaller wrists. Accuracy figures range from -3/+7 seconds per day to erratic results between 0 and -10 seconds per day, with a 70-hour power reserve. Some owners express concerns about the brand's QC reputation and the micro-rotor movement's performance, while one reviewer noted questionable finishing on a prototype's hour hand and a rattly clasp. Overall, owners and reviewers rate the Yema Skin Diver CMM.20 highly for its vintage styling and improved bracelet at the price.

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