Discover New Dial Colors in the Semi Skeleton Series from the Contemporary Collection by Orient Watches
A skeleton watch exposes the mechanism's construction from the dial side: the plates and bridges are skeletonized so that working components are visible. A semi skeleton shows only a selected fragment, most often the balance wheel. It's a choice for those who want to observe a watch's mechanics but still expect a readable dial and everyday convenience.
What is a skeleton watch?
In a classical watch, most of the mechanism remains hidden beneath the dial. In a skeleton watch, part of the main plate and bridges are removed or designed from the start in a skeletonized form. This allows you to see from the front elements that normally work out of sight.
Fondation Haute Horlogerie describes skeletonization as the art of openworking mechanism elements while maintaining proper operation. A transparent caseback alone therefore doesn't transform an ordinary watch into a full skeleton; it can only additionally show the mechanism from the back.
Such constructions most often apply to mechanical watches, because the movement of the balance wheel, gears, and spring is part of their appeal. If you want to first clarify the basics of drive systems, see the WestWatches guide: automatic versus quartz mechanism.
In practice you'll also encounter the terms "openworked" and "open heart". The first typically describes a broadly skeletonized movement, and the second – a small window in the dial through which you can see the balance wheel. The latter is actually close to semi skeleton designs.
A good example of a skeleton watch is the EPOS Sport Skeleton Automatic 41 mm 3506.139.24.15.34. The skeletonized dial exposes a large portion of the automatic mechanism, allowing you to observe its operation directly from the front. The sporty case with a 41 mm diameter and rose gold finish gives the model distinctive character, and the visible mechanism construction becomes the main element of its design.
Skeleton watch versus semi skeleton – what's the difference?
The most important difference concerns the scale of mechanism exposure. A full skeleton transforms much of the dial and mechanism construction into an open composition. A semi skeleton retains a more complete dial and shows only a selected fragment, which is why it's usually easier to read the time and match the watch to everyday attire.
|
Feature |
Full skeleton |
Semi skeleton |
|
Mechanism visibility |
Large portion of construction: plate, bridges, and working elements |
Selected fragment, e.g., balance wheel or small seconds area |
|
Dial |
Heavily skeletonized or limited to indices and minute ring |
Mostly complete, with one or several openings |
|
Everyday wear |
More dramatic appearance; readability depends on design and contrast |
Usually more legible and easier to wear daily |
|
Execution complexity |
High: extensive skeletonization must maintain rigidity and proper mechanism function |
Smaller scope of exposure simplifies construction and finishing |
|
Example from collection |
Depends on current offering |
Orient Semi Skeleton, Contemporary collection |
This doesn't mean every full skeleton is delicate for everyday use. Durability is determined by the watch's entire design, including case, crystal, seals, and caliber construction. However, skeletonization requires precision, as material removal cannot compromise mechanism operation.
Orient Star Contemporary Semi Skeleton Automatic 39 mm RE-AT0021L00B Keshiki Limited Edition is a good example of a semi skeleton watch. Rather than exposing nearly the entire mechanism, this model shows only a selected fragment through a distinctive opening in the blue dial. This way it retains classic legibility and an elegant appearance while allowing observation of the automatic mechanism's operation.
Who is a skeleton watch right for?
A skeleton watch is a good choice for someone who treats the mechanism as part of the design, not just a power source. Instead of a solid dial, you get moving elements, layers, and changing reflections. It's a stronger styling accent than a classical three-hand model.
A full skeleton works well for a collector who deliberately seeks a technical effect and elaborate construction. A semi skeleton is a safer choice for a first watch with a visible mechanism: it retains the traditional dial layout but adds a window allowing you to observe the balance wheel's operation.
When purchasing, also pay attention to the contrast of hands and indices against the exposed mechanism. The more details visible beneath the hands, the more important readability becomes. It's also worth checking water resistance, crystal type, and case thickness, as these parameters affect everyday use more than the skeleton designation alone. If the watch is to be worn to work and under a shirt cuff, a semi skeleton often provides a good compromise between technical effect and a more understated form.
The terms "men's skeleton watch" and "women's skeleton watch" describe mainly size, styling, and how the model is positioned, not the skeletonization technique itself. When choosing, it's worth looking at diameter, thickness, and case proportions. At WestWatches you can compare classic men's watches and men's fashion watches to see whether you prefer a more understated or distinctive character.
Orient Semi Skeleton from the Contemporary collection – example from WestWatches selection
A good example of a watch with a visible mechanism is the Orient Semi Skeleton series from the Contemporary collection. The brand retains a large, legible dial surface, and at the 9 o'clock position places a window showing the mechanism's operation. The small seconds dial is positioned at 6 o'clock, keeping the front organized despite the technical accent. 
Orient Star Contemporary Modern Skeleton Automatic 41 mm RE-AV0113S00B is a skeleton watch in a modern, more practical version. The skeletonized sections of the light dial expose the working automatic mechanism, and the open balance window allows you to observe its movement without sacrificing legible indices and a classic hand layout. The stainless steel case and bracelet, along with blue hands, give the model an elegant, technical character.
New dial colors presented in 2024
On February 14, 2024, Orient announced four new color variations for the Semi Skeleton: white, green, light blue, and red. The versions went on sale in 2024 and expanded the series with a more casual, everyday character.
The white dial was paired with gold-colored case, bracelet, hands, and indices – this was the first such combination in the series. The red and light blue variants received silver hands and indices, while the green received gold.
Colored dials shift Semi Skeleton toward business casual and everyday wear. The watch still has a stainless steel bracelet and organized indices, but the open mechanism window and saturated colors mean it doesn't look like a typical formal model for a suit.
Technical specifications of Orient Semi Skeleton Contemporary
At the heart of the series is the automatic F6S22 caliber with manual winding capability and stop-second function. The manufacturer states 40 hours of power reserve, 24 jewels, and accuracy of +25 to –15 seconds per day. The mechanism can also be viewed through the transparent caseback.
|
Parameter |
Value |
|
Collection / series |
Contemporary / Semi Skeleton |
|
2024 variant references |
RA-AR0007S, RA-AR0008E, RA-AR0009L, RA-AR0010R |
|
Mechanism |
Automatic with manual winding, F6S22 caliber (Orient in-house) |
|
Accuracy |
+25 to –15 seconds per day |
|
Power reserve |
40 hours |
|
Jewels |
24 |
|
Case |
Stainless steel; 48.0 x 40.8 x 10.9 mm |
|
Crystal |
Sapphire front / mineral back |
|
Bracelet |
Stainless steel SUS316L |
|
Water resistance |
5 bar (50 m) |
|
Dial colors |
White, green, light blue, red |
The F6S22 is a caliber manufactured by Orient. If you want to explore this topic further, read about what an in-house mechanism is at Orient. The stated tolerance is a manufacturer parameter; its practical significance is explained in a separate guide on what watch accuracy means.
Orient Classic Open-Heart Automatic 40.5 mm RA-AG0001S30B is an example of an open-heart watch, in which the mechanism remains mostly hidden beneath a complete dial, but its operation can be observed through a small opening exposing the balance wheel. This allows the model to combine classical, elegant styling with an eye-catching mechanical detail.
The case is 40.8 mm wide and 10.9 mm thick. Such proportions maintain a clear presence on the wrist without creating a very tall construction. The sapphire crystal on the front protects the dial, and 5 bar water resistance is suitable for typical everyday use, not diving.
If you're interested in Orient watches and Orient Star in a more classical version, also see other Orient news – Bambino with small seconds. Semi Skeleton puts the mechanism front and center, while Bambino showcases the more understated side of the brand's design. This makes it easier to compare two different ways of combining traditional watchmaking with everyday style.
In our online watch store you'll find a wide selection of mechanical models with varying degrees of mechanism exposure – from eye-catching skeleton models, through more subdued semi skeletons, to elegant open-heart watches. This makes it easy to find a model suited to your own style, whether you're looking for a watch with a technical, distinctive character or a classical construction with a subtle mechanical detail.
Frequently asked questions about skeleton watches
What is a skeleton watch?
It's a watch in which the mechanism is deliberately skeletonized and visible from the dial side. The design removes part of the material from the plate or bridges or builds them in an open form from the start to show the mechanism's operation.
How does a skeleton watch differ from a semi skeleton?
A full skeleton exposes a large portion of the mechanism's construction. A semi skeleton retains a more complete dial and shows only a selected fragment, for example the balance wheel through an open-heart window.
Does a transparent caseback mean a watch is a skeleton?
No. A transparent caseback allows you to view the mechanism from the back, but alone it's not skeletonization. The skeleton designation is determined primarily by mechanism skeletonization and its exposure in the watch's design.
Who is a skeleton watch right for?
For people who want to see mechanical operation and like a technical dial character. A semi skeleton works especially well when you want this effect but don't want to sacrifice a readable, everyday layout.
What mechanism does the Orient Semi Skeleton from the Contemporary collection have?
The series uses the automatic F6S22 caliber manufactured by Orient. It features manual winding, stop-second function, 24 jewels, and approximately 40 hours of power reserve.
Is a skeleton watch harder to maintain?
Not because the mechanism is "open" to dust – it's still protected by crystals and the case. However, extensive skeletonization requires precise construction, so servicing should be performed by a watchmaker familiar with the specific mechanism, following manufacturer recommendations.
Does a skeleton watch suit a casual style?
Yes. Semi skeleton versions with colored dials combine technical detail nicely with everyday legibility. Orient Contemporary in white, green, light blue, and red is an example of such a more relaxed approach.
Krzysztof Szopa
Watch Expert
Expert associated with the WestWatches.pl brand, a place that has been supplying watches for every occasion for years. Thanks to many years of experience in the watchmaking and jewelry industry, he passionately shares his knowledge, offering professional advice both in the online store and in the physical location. He specializes in selecting original watches, watch accessories, and jewelry items that combine exceptional quality with competitive prices. His goal is to help customers find the perfect product that meets their expectations and highlights their style.
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