The Orient Star RE-BW0008B is a black-dial, hand-wound M45 F8 moon-phase watch that Orient Star lists as a new September 2026 release and a 75th Anniversary limited edition of 140 pieces. Its headline specifications include the in-house F8A62 calibre, more than 70 hours of stated power reserve, and a 39.5 mm stainless-steel case. Availability and stock are not established here.
What is the Orient Star RE-BW0008B?
RE-BW0008B is the exact reference for the black-dial Orient Star M45 F8 Mechanical Moon Phase Hand Winding. Orient Star’s product page marks it “NEW,” dates its launch to September 2026, and identifies it as a 75th Anniversary limited edition of 140 pieces. These are manufacturer-published details, not confirmation that the watch is currently available to buy. Orient Star’s official product page is the source for the reference and release description.
The model belongs to the M45 F8 moon-phase family. Orient Star also lists RE-BW0004S and RE-BW0005N in the collection; those are separate references, so their specifications should not be assumed to match the RE-BW0008B. The official M45 F8 collection page shows the related models.
RE-BW0008B specifications
| Specification | Orient Star listing |
|---|---|
| Reference and edition | RE-BW0008B; 75th Anniversary limited edition of 140 pieces |
| Movement | In-house calibre F8A62; mechanical hand winding; 20 jewels |
| Power reserve | Over 70 hours |
| Stated accuracy | +15 to -5 seconds per day |
| Case | SUS316L stainless steel; 39.5 mm wide, 46.7 mm high, 11.9 mm thick |
| Crystal | Dual-curved sapphire with anti-reflective coating on the front; sapphire exhibition back |
| Strap and buckle | Black Cordovan strap, 20 mm wide; push-button trifold deployant buckle |
| Water resistance | 3 bar (30 m) |
| Magnetic resistance | JIS Type 1 |
| Weight | 79 g |
| Warranty | Three years |
All figures in the table are Orient Star’s published specifications for this reference. The brand notes that specifications may change without notice, and that images and colors may vary. The stated 3 bar (30 m) rating is not, by itself, a swimming recommendation. Check Orient Star’s product listing for the latest specification details.
#1 Best Overall
- White dial with IP Blue Hands and Silver Hour Indexes
- Orient Star Automatic and Manual-winding Movement Cal.F7M63 Made in Japan, 22 Jewels
- Second-hand-stop / Hacking function, 50 Hours Power Reserve Indicator, Moon Phase Sub-dial and Date Hand
- Super Anti-reflective coating Sapphire Glass, See thru-caseback
- Case Diameter: 41mm x 13.1mm
Movement and moon-phase design
Hand-wound F8A62 calibre
The watch uses Orient Star’s in-house hand-wound F8A62 movement, with a moon-phase display, power-reserve display, and an in-house silicon escape wheel. Orient Star specifies a power reserve of over 70 hours. The exhibition back reveals the movement, including its blue escape wheel and Geneva stripes. These are manufacturer descriptions and specifications, not the result of an independent comparative test.
Dial and moon-phase display
Orient Star says the dial takes its inspiration from “the moon drifting through clouds.” The company describes nanoparticle metal multilayering as the technique used to give the clouds and stars depth and gradation. Its moon-phase display uses a new patent-pending, three-layer construction: a lustrous metal plate with stars, a mother-of-pearl moon motif plate, and a moon-phase drive wheel. These construction and design claims are attributed to Orient Star.
Rank #2
- Set Includes: Watch, box, and warranty card included RPA2023 Drive System: Mechanical (hand winding and self-winding)
- Accuracy: Daily difference + 25 seconds to -15 seconds
- operating time: 40 hours RPA2023 Country of Origin: Japan (Made in Japan)
How it differs from other M45 F8 references
RE-BW0004S and RE-BW0005N are other references shown on Orient Star’s M45 F8 collection page. RE-BW0008B is the reference identified as the new black-dial September 2026 75th Anniversary limited edition. The available information establishes the related references and family, but does not provide a complete specification-by-specification comparison for all three in one listing. Consult each reference’s own product page before treating a feature or dimension as shared.
Orient Star previously announced M45 F8 hand-wound moon-phase models on September 3, 2025, including a 140-piece limited edition. That earlier release is historical context, not the launch date of RE-BW0008B. See the September 3, 2025 Orient Star announcement.
Rank #3
- Orient Bambino
- Set Includes: Main unit, box,
- Drive Type: Mechanical (self-winding, hand-winding)
- Time accuracy: +25 seconds to -15 seconds per day
- Country of Origin: Thailand
Fit, water resistance and ownership details
The listed case measures 39.5 mm across, 46.7 mm from lug to lug, and 11.9 mm thick. The black Cordovan strap is 20 mm wide. That measurement helps when considering replacement straps, but it does not confirm that a third-party strap will fit the watch’s end connection or work with its buckle; verify both before ordering.
Orient Star specifies 3 bar (30 m) water resistance and JIS Type 1 magnetic resistance. Follow the manufacturer’s guidance for use rather than interpreting the depth-equivalent rating as a promise of suitability for swimming or other water activities. The page lists a three-year warranty; confirm the terms that apply in your market with Orient Star or an authorized seller.
Rank #4
- Target Audience: Men's
- Set Includes: Watch, box, instruction manual (English language not guaranteed)
- 5BAR
- Movement: Mechanical (self-winding, hand-winding) Accuracy: Sunday + 25 seconds to -15 seconds, Working time 40 hours or more, Made in Japan. Made in Japan
Price and availability
Orient Star’s product information establishes the planned September 2026 launch and 140-piece limited-edition designation, but it does not establish live stock, regional availability, or a current retail price. Check the brand or a local authorized retailer for current purchasing information; a limited-edition designation alone does not show whether any pieces remain available.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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