The Orient Star Sports Outdoor RE-AU0203B is a Japanese-made automatic mechanical watch with a 41 mm case, sapphire crystal, leather strap and 100 m water resistance, according to Orient Star’s official English product page. The page identifies its movement as calibre F6N43 and lists both automatic and hand winding. It does not provide the model’s accuracy, power reserve, case thickness or strap width, so figures for related Outdoor references should not be treated as RE-AU0203B specifications.
What is the Orient Star Sports Outdoor RE-AU0203B?
RE-AU0203B is a specific reference in Orient Star’s Sports Outdoor mechanical watch line. Orient Star’s official English product page calls it an “Outdoor” model and identifies its movement as Cal.F6N43 Made in Japan. This is a specification-based look at that reference, not a report of a verified wear test.
RE-AU0203B specifications
| Specification | Orient Star listing for RE-AU0203B |
|---|---|
| Movement | Mechanical, Cal.F6N43 Made in Japan |
| Winding | Automatic and hand winding |
| Case components | Stainless steel |
| Case width | 41 mm |
| Case thickness and height | Not stated on the official English product page |
| Front glass | Sapphire crystal |
| Caseback | See-through, with crystal glass back |
| Strap | Leather; width not stated |
| Water resistance | 100 m |
| Jewels | 22 |
| Listed functions | Date indicator and power-reserve indicator |
| Accuracy | Not stated on the official English product page |
| Mechanical power reserve | Not stated on the official English product page |
The manufacturer notes on that page that specifications may be modified without notice for technical improvements, and that product images may change. The published listing leaves several measurements and performance fields blank; they should not be inferred from the calibre or from another reference.
How RE-AU0203B compares with related Outdoor references
Orient Star’s Japanese product pages list two other F6N43-powered Outdoor references. Their specifications help show variation within the line, but they do not fill in the missing RE-AU0203B figures.
Recommended Free Tools
#1 Best Overall
![ORIENT Star RK-AV0B01S [Men's Metal Contemporary Layered Skeleton] Watch Shipped from Japan](https://m.media-amazon.com/images/I/41cuZEbBxvL._SL160_.jpg)
- Set Includes: Main unit, box,
- Drive type: Mechanical (hand wind + self-winding)
- Accuracy: +25 seconds to -15 seconds per day
- Operation time: 50 hours or more (with power reserve indicator)
- Country of Origin: Japan (Made in Japan)
| Reference | Case dimensions | Power reserve | Water resistance | Strap |
|---|---|---|---|---|
| RE-AU0203B (official English page) | 41 mm wide; height and thickness not stated | Not stated | 100 m | Leather |
| RK-AU0210B (official Japanese page) | 41.0 mm wide × 49.0 mm tall × 12.1 mm thick | Over 50 hours | 10 bar | Leather |
| RK-AU0206B (official Japanese page) | 41.0 mm wide × 49.0 mm tall × 12.1 mm thick | Over 50 hours | 10 bar | Nylon; additional strap listed |
The RK-AU0210B and RK-AU0206B figures come from Orient Star’s Japanese RK-AU0210B page and Japanese RK-AU0206B page. Those pages also list accuracy of +25 to -15 seconds per day for those two references. That accuracy and their over-50-hour reserve are model-specific, not verified specifications for RE-AU0203B. The Japanese pages list an August 2019 launch for RK-AU0210B.
Strap material differs between the two related references, and the listed additional strap on RK-AU0206B does not establish compatibility with RE-AU0203B. Orient Star’s English listing does not provide RE-AU0203B’s strap width, so check the exact reference and fit before buying a replacement.
Rank #2
- Set Includes: Main unit, box,
- Drive type: Mechanical (hand wind + self-winding)
- Accuracy: +25 seconds to -15 seconds per day
- Operation time: 50 hours or more (with power reserve indicator)
- Country of Origin: Japan (Made in Japan)
What the listed specifications mean for a buyer
- Winding: The page lists both automatic and hand winding, so the movement can be wound by wrist motion or by hand.
- Readability of remaining reserve: A power-reserve indicator is listed as a function, but the official RE-AU0203B page does not state how long the watch runs when fully wound.
- Water resistance: Orient Star specifies 100 m for this reference. That rating is distinct from the 10 bar rating listed on the Japanese pages for RK-AU0210B and RK-AU0206B.
- Case size: The stated 41 mm is the case width. The English listing does not give height or thickness, so it is not enough to establish the watch’s full wrist profile.
The official brand editorial page says Orient Star was established in Japan in 1951; that is Orient Star’s own brand-history statement, not a specification of this watch. Its product details concern other models, not RE-AU0203B: Orient Star editorial page.
Quick Recap
Rank #4
- Set Contents: Main unit, Box, Warranty
- Drive Type: Quartz (solar powered)
- Accuracy: monthly deviation within ±20 seconds
- Operation time: about 6 months
- Country of Origin: Japan (Made in Japan)
Rank #3
- Set Includes: Main unit, box,
- Drive Type: Mechanical (self-winding, hand-winding)
- Time accuracy: +25 seconds to -15 seconds per day
- Operation time: 50 hours or more (with power reserve indicator)
- Country of Origin: Japan (Made in Japan)
What to verify before buying
- Confirm that the listing is for reference RE-AU0203B, rather than a visually similar Outdoor model.
- Check the seller’s market-specific listing for current availability, price, included items and any local warranty terms; the official page does not establish current retail stock or pricing.
- If accuracy, power reserve, thickness or strap fit is essential, request documentation for RE-AU0203B itself. The related references’ specifications are not a substitute.
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.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →
