Watch

Orient Star's M45 F7 Mechanical Moon Phase Series: A Blend of Intricate Design and Japanese Craftsmanship

Dec 20, 2025, 11:18 AM

Orient Star has unveiled three new iterations of its esteemed F7 Mechanical Moon Phase series, reinforcing its legacy of combining sophisticated mechanics with profound aesthetic appeal. These latest models feature elegant white, deep navy blue, and a distinctive limited-edition light blue dial, each meticulously designed to captivate horology enthusiasts. This collection showcases a rich array of functionalities, including a precise moon phase display, a clear radial date indicator, and a convenient power reserve gauge. Furthermore, a unique open-heart aperture offers an intriguing view of the watch’s internal mechanics, allowing for appreciation of the intricate balance spring in motion. Each timepiece in this series is a testament to Orient Star’s dedication to exquisite craftsmanship and innovative design, reflecting a deep respect for natural beauty and traditional Japanese artistry.

Orient Star’s M45 F7 Mechanical Moon Phase collection, first launched in 2017, continues to evolve, epitomizing the brand’s philosophy of blending traditional Japanese aesthetics with precision engineering. These new additions expand on the original vision, offering collectors and enthusiasts new color options while maintaining the series' distinctive features. The brand, the premium division of Orient, operates under the Seiko Epson Corporation, leveraging advanced printing technologies to enhance details such as the deep-blue night sky and sharp, bright stars on the moon phase disc. The watches are not merely time-telling devices but wearable pieces of art, celebrating the celestial rhythm and Japanese design principles.

The Refined Aesthetics and Technical Prowess of the M45 F7 Series

The latest Orient Star M45 F7 Mechanical Moon Phase collection introduces a trio of stunning timepieces, each a testament to Orient Star's dedication to precise mechanics and elegant design. The white and navy blue dial versions join the standard offerings, while a limited edition with a captivating light blue dial, restricted to 190 units, adds an exclusive touch. Central to these watches is the moon phase indicator at 6 o'clock, complemented by a radial date display. Above this, a power reserve indicator, a signature feature of Orient Star, keeps track of the watch's energy. A striking open-heart window at 9 o'clock allows a fascinating view of the movement's oscillating balance spring, highlighting the intricate engineering within. This series is a perfect example of Japanese watchmaking, where every element, from the deep-blue night sky on the moon phase disc to the subtle 'OS' pattern on the dial, is crafted with meticulous attention to detail and inspired by natural beauty.

The Orient Star M45 F7 Mechanical Moon Phase collection showcases a harmonious blend of functionality and artistic design. The dial is a vibrant tableau of information and intricate patterns. The moon phase display, enhanced with sharper, brighter stars, is beautifully framed by a radial date display that utilizes dots for even dates and numerals for odd ones, indicated by a central leaf-shaped hand. The power reserve indicator, positioned below 12 o'clock, features a sweeping leaf hand that encourages interaction with the wearer, reminding them to either hand-wind the watch or engage its automatic winding mechanism. A subtle, repeating 'OS' pattern adorns the center of the dial, visible under specific lighting, adding a layer of sophisticated detail. The fluted ring that frames these elements is elegantly curved to accommodate the power reserve hand, demonstrating thoughtful design integration. While the Roman numerals, especially at 6, 8, and 9 o'clock, are partially obscured by the dial apertures and the semi-skeletonized section, the overall visual impact is one of captivating complexity. Legibility is maintained by perfectly aligned leaf-shaped hour and minute hands, with the white dial featuring blued hands for contrast, and the navy and light blue models sporting polished steel hands. The navy blue dial further distinguishes itself with darkened scales for the date and power reserve, contrasting with the steel bases found on the white and light blue versions.

Uncompromised Craftsmanship and Technical Specifications

The time, date, and moon phase settings of the Orient Star M45 F7 watches are easily adjusted via a ergonomically designed conical crown. The 41mm case, made from high-quality SUS316L stainless steel, is paired with a matching five-row bracelet featuring a butterfly deployant clasp for secure wear. Owners of the white and navy blue dial variants will also receive an additional black cordovan strap, while the exclusive light blue limited edition comes with a navy blue leather strap, enhancing its distinct appeal. Powering these exquisite timepieces is the in-house automatic caliber F7M42, which boasts a daily accuracy tolerance of +15/-5 seconds and a robust 50-hour power reserve. This sophisticated movement is proudly displayed through a sapphire case back, allowing enthusiasts to admire its intricate workings. Despite its advanced mechanics and durable construction, the watch maintains a balanced profile, with a thickness of 13.8mm, making it a comfortable yet substantial presence on the wrist. This meticulous attention to both external design and internal mechanics underscores Orient Star's commitment to delivering watches of exceptional quality and enduring value.

The Orient Star M45 F7 Mechanical Moon Phase collection is characterized by its superior technical specifications and refined materials. Each model features a durable 41mm stainless steel case crafted from SUS316L alloy, known for its resistance to corrosion and wear. The dual-curve sapphire crystal, treated with an anti-reflective coating, ensures optimal readability and protection against scratches, while the screw-in case back, also incorporating sapphire crystal, provides a view of the automatic in-house caliber F7M42. This movement operates at 21,600 vibrations per hour (3Hz) and offers a substantial 50-hour power reserve, ensuring reliable timekeeping with an accuracy range of +15 to -5 seconds per day. The watches are water-resistant up to 5 bar (50 meters), making them suitable for everyday wear. The versatility of the collection is further enhanced by the inclusion of an additional strap with each purchase: black cordovan for the white and navy blue versions, and a navy blue leather strap for the limited-edition light blue model. With pricing set at €1,799.99 / £1,599.99 for the standard models and a slight premium of €1,899.99 / £1,699.99 for the limited edition, these watches offer a compelling blend of luxury, precision, and unique Japanese design.

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