The Orient Star M45 F7 Small Second RE-BS0001E is a compact Classic dress automatic: 39 mm wide, 11.7 mm thick, sandblasted green dial, small seconds at 6, power-reserve fan at 12, and no date. Orient Star built it around in-house calibre F7H44 — automatic, hand-wind, hacking — under a dual-curve sapphire crystal with super anti-reflective coating. If you want a green Orient Star that disappears under a cuff, this is the current M45 small-seconds reference.
Why the green M45 small seconds works
The dial is the point. Orient Star combines a sandblasted, almost stardust matte with a two-piece construction: leaf hands, slim Roman numerals, and a railway minute track. There is no calendar cut-out, so the symmetry stays clean. Small seconds sit in a circular-brushed subdial at 6 o’clock; the power-reserve indicator at 12 o’clock is the Orient Star signature, here finished to match the sandblast rather than shouting with extra sunburst. Dual-curve sapphire with SAR coating on both sides lets you see that texture without a sheet of glare.
The case is the other half of the brief. At 39.0 mm across and 45.7 mm lug-to-lug it is the compact end of the M45 Classic family — short enough for smaller wrists and shirt cuffs. Thickness is 11.7 mm. The steel (SUS316L) mixes hairline and mirror finishes. A push-pull crown and 30 m water resistance mean this is a dress/everyday watch, not a swimmer.
Who it is for
- Buyers who want a green dress automatic without a busy date window
- Wrists that prefer ~39 mm and a short 45.7 mm lug-to-lug
- People who use a power-reserve indicator more than a date
- Anyone comparing Orient Star Classic pieces in Australia who wants authentic stock inspected before dispatch
Movement: calibre F7H44
F7H44 is Orient Star’s in-house automatic for this M45 small-seconds series, made in Japan. It beats at 21,600 vibrations per hour (3 Hz), uses 24 jewels, and is specified at +15 to −5 seconds per day in static testing. Power reserve is over 50 hours. You get automatic winding, hand-winding, and hacking seconds. Finishing includes Geneva stripes / perlage on the bridges and a decorated rotor, visible through the flat sapphire exhibition case back (screw-down). Functions are central hours and minutes, small seconds, and the power-reserve indicator — no date, no day.
Case, crystal, and strap
Case material is SUS316L stainless steel. Dimensions from Orient: 39.0 mm width (3–9), 45.7 mm height / lug-to-lug (12–6), 11.7 mm thickness. Front crystal is dual-curve sapphire with SAR coating; the case back is flat sapphire. Strap is brown leather, 20 mm, with a push-button trifold deployant buckle. Manufacturer wrist range is 150–190 mm. Weight is 76 g. Water resistance is 3 bar (30 m). Magnetic resistance is JIS Type 1 (4,800 A/m or higher). Lume is not a feature on this dress reference — do not expect a diver’s night dial.
30 m is splash and rain, not swimming. Keep the crown dry. If you need 100 m and a sports skeleton, look at Orient Star’s M34 Avant-garde F8 line instead.
Technical specifications
- Brand / collection: Orient Star Classic M45 F7 Small Second
- Reference: RE-BS0001E (store SKU RE-BS0001E00B; JDM often listed as RK-BS0001E)
- Dial: green, sandblast / matte two-piece; Roman numerals; railway track; leaf hands
- Layout: small seconds at 6, power-reserve indicator at 12, no date
- Siblings: RE-BS0002S ivory; RE-BS0003N grey 75th-anniversary limited (500 pieces) — this green RE-BS0001E is regular production
- Movement: F7H44 automatic, hand-wind, hacking, 24 jewels, 21,600 vph
- Accuracy (static): +15 to −5 seconds per day
- Power reserve: over 50 hours, with indicator
- Case: SUS316L stainless steel, push-pull crown
- Case size: 39.0 mm width, 45.7 mm lug-to-lug, 11.7 mm thick
- Crystal: dual-curve sapphire with SAR coating (front); flat sapphire exhibition back
- Strap: brown leather, 20 mm, push-button trifold deployant
- Water resistance: 30 m (3 bar)
- Magnetic resistance: JIS Type 1, 4,800 A/m or higher
- Weight: 76 g
- Origin: Japan
How it compares
Ivory RE-BS0002S shares the same F7H44, 39 mm case, and brown leather. Choose green RE-BS0001E if you want colour that still reads as a dress watch. The grey RE-BS0003N adds 75th-anniversary case-back engraving and a limited run; this green model is the ongoing catalogue version.
Against older Orient Star Classics with a date at 3, the F7 small seconds is quieter and more symmetrical. Against Orient Bambino (mineral crystal, 30 m, often 38.4–42 mm), you step up to dual-curve sapphire, a decorated in-house F7, a power-reserve display, and Orient Star finishing — at a higher price.
Buying Orient Star in Australia
Chronospride lists authentic Orient Star stock and inspects pieces before dispatch. Eligible Australian orders ship free. Coverage is Chronospride’s 12 months warranty, handled by our team. Read the authenticity and warranty page for terms. Compare other Japanese automatics in our Orient watches Australia shop if you are still deciding between Classic dress pieces and sports collections.
Frequently asked questions
What is the water resistance of the Orient Star RE-BS0001E?
30 metres (3 bar). That covers rain, hand washing, and splashes. It is not for swimming or showering. The crown is push-pull, not screw-down.
What movement does the RE-BS0001E use?
Orient Star calibre F7H44, made in Japan: automatic with hand-winding and hacking seconds, 24 jewels, 21,600 vph, over 50 hours of power reserve, and a power-reserve indicator. No date complication.
Does the green M45 F7 have a date window?
No. Hours, minutes, small seconds at 6 o’clock, and the power-reserve indicator at 12 o’clock only. The two-piece green dial stays symmetrical.
What size is the Orient Star M45 F7 Small Second?
39.0 mm wide, 45.7 mm lug-to-lug, 11.7 mm thick, 20 mm lug width. Weight is 76 g. It is one of the more compact current Orient Star Classics.
Is the RE-BS0001E suitable as an everyday watch?
Yes as a dress and office watch. Dual-curve sapphire and a deployant leather strap make daily wear comfortable. Skip it if you need 100 m water resistance, lume, or a sports bracelet — that is a different Orient Star brief.
Is the green RE-BS0001E a limited edition?
No. RE-BS0001E (green) and RE-BS0002S (ivory) are regular production. The grey RE-BS0003N is the 75th-anniversary limited (500 pieces) in this small-seconds family.
Where can I buy the Orient Star RE-BS0001E in Australia?
This Chronospride listing is SKU RE-BS0001E00B. Authentic stock, inspected before dispatch, free shipping on eligible Australian orders, covered by Chronospride’s 12 months warranty handled by our team.
Authentic stock, inspected before dispatch. Free shipping Australia-wide on eligible orders. Covered by Chronospride’s 12 months warranty, handled by our team. See our authenticity and warranty page.
| Case-Size | 39mm |
|---|---|
| Band-Width | 20mm |
| Lug-Width | 20mm |
| Lug to lug size | 45.7mm |
| Case Thickness | 11.7mm |
