Orient Star Moon Phase RE-AY0103L00B — WatchNation
Orient Star — Mechanical Moon Phase — Blue Gradation Dial
RE-AY0103L00B
Calibre F7M62 Automatic  ·  Moon Phase  ·  Power Reserve Indicator  ·  41mm
WatchNation
Authorised Orient Star Retailer
Chester  ·  Est. 10 Years
Authorised Orient Star Retailer 3-Year Manufacturer Warranty Moon Phase Complication Blue Gradation Dial Calibre F7M62 50hr+ Power Reserve Dual Curved Sapphire Free UK Shipping 30-Day Returns
Our Commitment
Why Buy from WatchNation?
01
Official Partner

Buy with absolute confidence. As an authorised Orient Star dealerwe sell

100% authentic timepieces
sourced directly from the brand, ensuring your watch is genuine and untampered with.

02
Official 3-Year Warranty

Every Orient and Orient Star watch now comes with a worldwide 3-year official manufacturer warranty (recently upgraded from the previous 1-year standard). This guarantees that your repairs and replacements are fully covered under the brand's premium global policy. Grey market sellers simply cannot compete with this level of official, long-term protection.

03
Expert Service & Support

As an authorised partner, our team has direct access to official brand training and resourcesWe provide knowledgeable advice and high-tier, factory-approved after-sales service to keep your timepiece running flawlessly.

04
Accurate Listings

Every listing is thoroughly checked and comprehensively described. What you see in our photographs is precisely what you receive

05
30-Day Returns & Free UK Shipping

Every order ships free within the UK, carefully packaged to arrive in perfect condition. A 30-day returns policy ensures you can purchase with complete confidence.

Water Resistance — Please refer to the specifications table for this model's water resistance rating. As a precision mechanical complication watch, we recommend avoiding submersion and having the case seal checked periodically by an authorised service centre.

A River Beneath the Moon

The dial's flowing water motif and moon phase display at 6 o'clock depict the moon gently illuminating a river below — a poetic scene rendered in blue gradation and diamond-shaped star hands. A complication built not just to track the lunar cycle, but to tell a quiet story every time it's worn.

Watch Anatomy
The Case, Dial & Bracelet
The Case
41mm Stainless Steel — Dual Curved Sapphire
The 41mm stainless steel case gives the RE-AY0103L00B a refined, balanced presence on the wrist — substantial enough to carry its complications with confidence, restrained enough for daily wear. A dual curved sapphire crystal with anti-reflective SAR coating on both sides keeps the dial clear under varying lighting conditions while meaningfully reducing glare. The sapphire crystal caseback reveals the in-house F7M62 movement beneath.
The Dial
Blue Gradation — Flowing Water Motif — Moon Phase
The blue gradation dial creates rich contrast and depth, its flowing water motif adding texture and movement across the surface. The moon phase display at 6 o'clock depicts the moon gently illuminating a flowing river, while a semi-skeleton aperture at 9 o'clock and power reserve indicator at 12 o'clock add mechanical character without overcrowding the layout. Diamond-shaped hands represent glittering stars — a poetic detail completing the moonlit theme. Orient Star has refined the hand proportions for improved visibility, with wider hour and minute hands and a shortened hour hand designed not to overlap the index markings.
The Bracelet
SUS316L Stainless Steel — Butterfly Deployant Buckle
A corrosion-resistant SUS316L stainless steel bracelet is secured by a butterfly deployant buckle with push button — combining durability, comfort, and refined everyday wearability appropriate to a watch of this calibre.
What Sets It Apart
Key Features
Moon Phase ComplicationMoon Over Flowing River
The moon phase display at 6 o'clock depicts the moon gently illuminating a flowing river beneath — a genuinely poetic rendering of a classic complication, integrated seamlessly into the dial's broader water motif theme.
Calibre F7M62 AutomaticHand-Winding & Second Hand Halt
The in-house F7M62 mechanical movement offers both automatic and hand-winding capability, over 50 hours of power reserve, and a second hand halt mechanism for precise time setting — a thoroughly considered movement specification befitting Orient Star's flagship positioning.
Semi-Skeleton Aperture9 O'Clock Mechanical Window
A semi-skeleton aperture at 9 o'clock offers a partial glimpse into the movement's inner workings — adding genuine mechanical character to the dial without disrupting its calm, balanced composition.
Power Reserve Indicator12 O'Clock Display
A power reserve indicator at 12 o'clock provides practical, at-a-glance information on remaining wind — a thoughtful functional addition that complements the watch's complicated dial layout without crowding it.
Diamond-Shaped Star HandsRefined for Legibility
The diamond-shaped hands represent glittering stars, reinforcing the moonlit theme with genuine poetic intent. Orient Star has refined the proportions for improved visibility — wider hour and minute hands, with a shortened hour hand designed specifically not to overlap the index markings.
Dual Curved Sapphire CrystalAnti-Reflective SAR Coating
A dual curved sapphire crystal with anti-reflective SAR coating on both sides keeps the intricate dial clear under different lighting conditions while substantially reducing glare — ensuring the moon phase and flowing water details remain visible and legible at all times.
SUS316L Steel BraceletButterfly Deployant Buckle
The corrosion-resistant SUS316L stainless steel bracelet with butterfly deployant buckle and push button offers premium durability and refined everyday comfort — the kind of finishing detail expected of Orient Star's higher tier.
Official 3-Year WarrantyWorldwide Manufacturer Coverage
Backed by Orient Star's official 3-year worldwide manufacturer warranty — a significant upgrade from the previous 1-year standard, ensuring complex mechanical complications like this are fully covered under the brand's premium global policy.
3Year Warranty

Official Orient Star 3-Year Manufacturer Warranty

Effective 1 July 2026, Orient and Orient Star extend their standard warranty period to 3 years worldwide. Products purchased between 1 April 2026 and 30 June 2026 are also eligible under the new warranty terms. Every watch sold by WatchNation is 100% genuine, sourced directly from Orient Star as an authorised retailer.

Technical Details
Specifications
Identity
Brand
Orient Star
Model Reference
RE-AY0103L00B
Collection
Mechanical Moon Phase
Movement
Movement Type
Automatic — In-House — Hand-Winding
Calibre
F7M62
Power Reserve
Over 50 Hours
Second Hand Halt
Yes — Precise Time-Setting
Case
Case Material
Stainless Steel
Case Diameter
41mm
Crystal
Dual Curved Sapphire — Anti-Reflective SAR Coating (Both Sides)
Caseback
Sapphire Crystal — Exhibition Display
Dial
Dial Colour
Blue Gradation — Flowing Water Motif
Hands
Diamond-Shaped — Refined Proportions
Complications
Moon Phase (6 o'clock) · Semi-Skeleton Aperture (9 o'clock) · Power Reserve Indicator (12 o'clock)
Bracelet & Clasp
Bracelet Material
SUS316L Stainless Steel — Corrosion-Resistant
Clasp
Butterfly Deployant Buckle with Push Button
Warranty
Warranty
3 Years — Official Orient Star Worldwide Manufacturer Warranty
In the Box
What's Included
Orient Star RE-AY0103L00B Watch
Original Orient Star Packaging
Warranty Documentation
Instruction Manual
In Detail
About This Watch

The RE-AY0103L00B is the Orient Star Mechanical Moon Phase — a watch that combines refined Japanese watchmaking with elegant dial detailing inspired by the movement of flowing water under moonlight. It is a piece that blends traditional craftsmanship with practical everyday usability, delivering sophisticated design that highlights both technical precision and visual depth.

The 41mm stainless steel case gives the watch a refined, balanced presence, while the blue gradation dial creates rich contrast and depth across its flowing water motif. The moon phase display at 6 o'clock depicts the moon gently illuminating a flowing river, complemented by a semi-skeleton aperture at 9 o'clock and power reserve indicator at 12 o'clock — mechanical character delivered without crowding the dial's careful composition. The diamond-shaped hands, representing glittering stars, add a poetic final touch, refined by Orient Star for genuinely improved legibility.

Protected by a dual curved sapphire crystal with anti-reflective SAR coating on both sides, the dial remains clear under varying lighting conditions while glare is meaningfully reduced. The sapphire crystal caseback reveals the in-house F7M62 mechanical movement, offering automatic and hand-winding capability, over 50 hours of power reserve, and a second hand halt mechanism for precise time-setting.

Finished with a corrosion-resistant SUS316L stainless steel bracelet secured by a butterfly deployant buckle with push button, the RE-AY0103L00B combines durability, comfort, and refined everyday wearability. Sold by an authorised Orient Star dealer and backed by the official 3-year worldwide manufacturer warranty — this is a sophisticated expression of modern Japanese watchmaking, complete with moon phase complication and carefully finished mechanical construction.