The Orient Star RE-BY0005A is the green M34 F7 Semi Skeleton: a 40 mm automatic with a mother-of-pearl dial that shifts from dark to light green, an open heart at 9, and small seconds at 6. It is a Contemporary dress-sport watch for someone who wants movement on show without a full skeleton, plus 100 m resistance and a steel bracelet — not a quartz daily beater and not a 200 m diver. Shop it as a Japan-made Orient Star from Chronospride in Australia.
The M34 case is 40.0 mm across, 47.3 mm lug-to-lug, and 13.0 mm thick on a 20 mm steel bracelet. Hairline and Sallaz mirror finishing sit on SUS316L steel. Front crystal is dual-curve sapphire with SAR coating on both sides; the exhibition back is sapphire on a screw case back. Power reserve sits under 12. Water resistance is 100 m — rain, sink, and swimming are in scope; it is still not a dive watch.
Who the RE-BY0005A suits
Buyers who like the M34 shape and want colour and openwork rather than a solid meteorite or black dial. The F7F44 is automatic with hand-winding and hacking seconds, so you can set it precisely and leave it off the wrist overnight. If you want the higher F8 spec, silicon escape wheel, and 60-hour reserve, look at the M34 F8 Date line. If you want a full skeleton 75th piece, look at the RE-AZ0105N.
Related browsing: Orient Star watches and the wider Orient watches Australia category. Case sizing: watch size calculator.
Specifications
- Reference: RE-BY0005A (store SKU RE-BY0005A00B)
- Collection: Orient Star Contemporary M34 F7 Semi Skeleton
- Dial: Green aurora gradation mother-of-pearl; open heart at 9; applied indexes with Roman 12
- Movement: In-house F7F44, automatic with hand-winding, 24 jewels; Geneva stripes and chamfer visible through the back
- Accuracy (factory static): +15 to −5 seconds per day
- Frequency: 21,600 vibrations per hour (3 Hz)
- Power reserve: 50 hours, with power-reserve indication
- Winding / hacking: Automatic rotor plus manual wind; hacking seconds (second-hand halt)
- Functions: Hours, minutes, small seconds at 6, power-reserve indicator, open-heart balance at 9
- Case: Stainless steel SUS316L, 40.0 mm width, 47.3 mm lug-to-lug, 13.0 mm thick
- Crystal: Dual-curve sapphire with SAR coating (front); sapphire exhibition back
- Case back: Screw-in, see-through
- Bracelet: Stainless steel SUS316L, 20 mm, pusher trifold clasp
- Water resistance: 100 m (10 bar)
- Magnetic resistance: 4,800 A/m
- Weight: 153 g (manufacturer)
- Origin: Japan
Why this M34 F7 Semi Skeleton is different
Orient Star’s M34 brief is the Perseid / M34 star cluster: a short, sharp Contemporary case rather than a round dress barrel. The F7 Semi Skeleton keeps a solid MOP dial and opens only the balance at 9, so it reads as a coloured watch first and a movement showpiece second. Green is the aurora-inspired regular production colour on steel; it is not the charcoal limited with the extra leather strap. Official accuracy for F7F44 is the tighter +15/−5 band, not the older +25/−15 Orient Star spec some listings still quote.
Frequently asked questions
What movement does the Orient Star RE-BY0005A use?
In-house calibre F7F44: automatic with hand-winding, 24 jewels, 21,600 vph, 50 hours of power reserve, and hacking seconds. Factory static accuracy is +15 to −5 seconds per day. Geneva stripes and chamfers show through the sapphire case back.
Does the RE-BY0005A have a date window?
No. Layout is hours and minutes, small running seconds at 6, power reserve under 12, and an open heart at 9. If you need a date, the M34 F8 Date (for example RE-BX0010A) is the dated sibling family.
What is the water resistance of the RE-BY0005A?
100 metres (10 bar). That covers rain, hand washing, and swimming. It is not a dive watch and has no rotating dive bezel.
What size is the case?
40.0 mm across, 47.3 mm lug-to-lug, 13.0 mm thick, 20 mm lugs. Manufacturer weight is 153 g on the steel bracelet.
Is the crystal sapphire?
Yes. Dual-curve sapphire with SAR anti-reflective coating on the front, and sapphire on the exhibition case back.
Is the RE-BY0005A suitable for everyday wear?
Yes, as a dress-sport automatic, if you are comfortable with a 40 mm steel watch on a bracelet. Sapphire crystal and 100 m resistance handle a normal day. Mother-of-pearl can show fingerprints and desk-dive marks more than a sunburst metal dial, so treat the crystal and bezel with the usual care.
Where can I buy the Orient Star RE-BY0005A in Australia?
This listing is in stock at Chronospride. 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.
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 | 40mm |
|---|---|
| Band-Width | 20mm |
| Lug-Width | 20mm |
| Lug to lug size | 47.3mm |
| Case Thickness | 13mm |
