ORIENT STAR Open Heart Moon Phase Power Reserve Roman Automatic Watch RE-AM0005S

Items Description

The ORIENT STAR Open Heart Moon Phase Power Reserve Roman Automatic Watch RE-AM0005S is a mechanical dress watch designed for collectors and enthusiasts who appreciate traditional watchmaking artistry. Featuring a 41 mm stainless steel case with a dual curved sapphire crystal, this timepiece presents an open heart aperture that reveals the oscillating balance wheel, a moon phase display at 6 o'clock, and a power reserve indicator positioned on the dial's upper left section.

 

Crafted in Japan, this model pairs a monogram-textured dial with electric blue leaf-shaped hands and applied Roman numerals, creating a classic aesthetic with contemporary visual depth. The hand-wound and automatic capabilities of the Caliber Series 46 F7 movement offer a power reserve of approximately 70 hours, while the exhibition case back allows a clear view of the decorated mechanism in motion.

 

Key Advantages of the ORIENT STAR Open Heart Moon Phase Power Reserve Roman Automatic Watch RE-AM0005S

 

1. Mechanical Movement with Open Heart and Power Reserve

At the heart of the ORIENT STAR RE-AM0005S lies the in-house Caliber F7 automatic movement, a mechanical engine that offers both automatic winding and manual hand-winding capability. The open heart aperture at 9 o'clock exposes the balance wheel's oscillation, providing a continuous view of the mechanism's operation. The power reserve indicator informs the wearer of stored energy at a glance, with a full wind delivering an extended running time.

 

• Open Heart Display: A dial cut-out reveals the balance wheel in motion, connecting the wearer visually to the mechanical operation.
• Power Reserve Indicator: A dedicated sub-dial displays remaining energy, allowing wearers to gauge when a rewind is needed.
• Automatic and Hand-Winding: The movement supports both winding methods, offering flexibility in daily maintenance.
• Approximate 70-Hour Reserve: A full wind sustains timekeeping for roughly three days, supporting occasional wear without constant re-setting.

 

2. Moon Phase Complication with a Distinctive Dial Layout

The moon phase function at 6 o'clock presents a graphical lunar cycle within a framed aperture, complementing the watch's astronomical theme. This complication tracks the lunar month and adds a layer of horological complexity that is both functional and decorative. The dial's monogram texture and applied Roman indices create a structured backdrop, while the electric blue leaf-shaped hands provide strong legibility against the silvered surface, giving this dial an identity of its own.

 

• Lunar Tracking: The moon phase disc advances daily to mirror the actual lunar cycle, a feature appreciated by those who value mechanical calendar functions.
• Monogram Dial Texture: A fine guilloché-style pattern covers the dial surface, adding depth and a light-catching quality under varying lighting.
• Roman Applied Indices: Metal numerals are individually applied, ensuring a refined three-dimensional appearance and easy readability.
• Electric Blue Hands: The leaf-shaped hands stand out clearly against the backdrop, offering a distinctive colour accent without sacrificing classic proportions.

 

3. Premium Materials and Case Construction

The 41 mm stainless steel case is engineered for daily wear, offering a balanced diameter that suits a range of wrist sizes. A dual curved sapphire crystal provides front protection with anti-reflective properties, and the transparent case back permits an unobstructed view of the decorated movement. The combination of polished surfaces and refined finishing is consistent with the Orient Star Classic line's design language, which draws from mid-century dress watch conventions.

 

• Dual Curved Sapphire Crystal: Both the front and rear of the case use sapphire, a material with high scratch resistance for long-term clarity.
• 41 mm Diameter: A versatile case size that fits comfortably under a shirt cuff while maintaining a solid presence.
• Exhibition Case Back: The decorated F7 movement, including its blued screws and perlage finish, is visible from the rear of the watch.
• Genuine Leather Strap: The hand-finished strap complements the dress-oriented design and wears comfortably from the first fitting.

 

4. Orient Star Heritage and Japanese Craftsmanship

Orient Star has produced mechanical watches in Japan since 1951, and the Classic line continues this tradition with an emphasis on accessible luxury. Watches from this collection are assembled to exacting standards, with each movement individually adjusted for accuracy. The RE-AM0005S carries forward design cues from earlier dress watches, such as the leaf hands and Roman numerals, while integrating modern technical elements like the open heart and moon phase displays.

 

• Historic Manufacture: Orient Star's long-running production of in-house movements supports a reputation for reliable mechanical performance.
• Japanese Assembly: Each piece is fabricated and regulated in Japan, contributing to consistent quality control.
• Classic Design Lineage: The dial architecture references post-war dress watch aesthetics while accommodating contemporary complications.
• Fully Equipped Presentation: The watch arrives with its original box and documentation, reflecting a complete purchase experience.

 

5. Daily Usability as a Mechanical Dress Watch

Beyond its technical attractions, the RE-AM0005S functions as a practical everyday timekeeper. The 5 ATM water resistance allows for handling incidental splashes and brief rain exposure without concern, while the leather strap and polished case transition smoothly from office settings to evening functions. For prospective owners who prefer not to rotate watches frequently, the near-70-hour power reserve permits a weekend of rest without losing the correct time, and the hand-winding function allows a quick restart when needed.

 

• Water Resistance: Rated to 5 ATM, suitable for daily wear and exposure to rain but not for swimming.
• Extended Power Autonomy: The movement can sit unworn for up to three days while maintaining accurate time.
• Quick Manual Wind: A few turns of the crown restarts the mainspring, avoiding the need for vigorous shaking to set the watch in motion
• Versatile Aesthetic: The monogram dial and blue hands read as appropriate for both business attire and relaxed weekend wear.

 

The ORIENT STAR Open Heart Moon Phase Power Reserve Roman Automatic Watch RE-AM0005S is best suited for mechanical watch enthusiasts who want an accessible entry point into astronomical complications and open heart displays, without sacrificing Japanese manufacturing integrity. With a Caliber F7 in-house movement, a moon phase function, and a power reserve indicator housed within a classic 41 mm case, this Orient Star delivers a level of finishing and technical scope that is appropriately positioned within the traditional dress watch segment.

Specifications of ORIENT STAR Open Heart Moon Phase Power Reserve Roman Automatic Watch RE-AM0005S

Model number	RE-AM0005S
Band Color	Silver
Dial color	Silver
Display	Analog
Watch Movement Type	Automatic
Additional Features	Chronograph, Roman Numeral
Strap Type	Bracelet
Water Resistance Depth	100 meters
Sport Type	Walking
Clasp Type	Deployment Clasp
Water Resistance Level	Water Resistant
Embellishment Feature	Crystal
Closure Type	Buckle
Style Name	Automatic Watch
Face Style	Skeleton

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Specifications
[Model number ]	RE-AM0005S
[Band Color ]	Silver
[Dial color ]	Silver
[Display]	Analog
[Watch Movement Type]	Automatic
[Additional Features]	Chronograph, Roman Numeral
[Strap Type]	Bracelet
[Water Resistance Depth]	100 meters
[Sport Type]	Walking
[Clasp Type]	Deployment Clasp
[Water Resistance Level]	Water Resistant
[Embellishment Feature]	Crystal
[Closure Type]	Buckle
[Style Name]	Automatic Watch
[Face Style]	Skeleton

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