The Orient Kamasu RA-AA0810N39B (also listed internationally as RA-AA0810N19B) is a full-fat Japanese automatic diver with the features people actually search for: sapphire crystal, 200 m water resistance, an in-house movement with hand-winding and hacking, and a grey gradient dial that looks sharper in person than flat catalogue photos suggest.
Case diameter sits just under 42 mm at about 41.8–41.9 mm, thickness around 12.8 mm, with a 22 mm steel bracelet. The F6922 calibre brings day and date, roughly 40 hours of power reserve, and the practical extras (hacking seconds, manual wind) that make daily ownership less fiddly. Luminous hands and markers keep the watch readable when the lights drop — the point of a real diver layout, even if most owners wear it as a sports-casual daily.
Why the grey Kamasu stands out
- Grey gradient dial — more depth than a flat black or blue; works with steel jewellery and muted clothing.
- Sapphire crystal — harder everyday scratch resistance than mineral-glass divers in the same price band.
- 200 m water resistance — genuine dive-rated case construction for swimming and water sports (respect gasket service intervals and crown discipline).
- F6922 in-house movement — automatic, hand-wind, hacking; day-date complication without a third-party base.
- Steel bracelet sports watch — ready as a one-watch travel piece; strap changes are optional, not mandatory.
Who it suits
Anyone shortlisting Orient Kamasu / Mako-family divers who wants grey over the louder colourways, or buyers comparing affordable Japanese automatic dive watches for Australian summers, boats and daily steel-bracelet wear. If you need a slim leather dress watch, a Bambino is the better lane.
Specifications — Orient Kamasu RA-AA0810N39B
- Reference: RA-AA0810N39B (same model family commonly sold as RA-AA0810N19B)
- Collection: Orient Kamasu (Mako/Kamasu diver family)
- Movement: Orient F6922 automatic, hand-winding, hacking seconds
- Power reserve: approx. 40 hours
- Case: Stainless steel, approx. 41.8–41.9 mm diameter
- Thickness: approx. 12.8 mm
- Lug width: 22 mm
- Crystal: Sapphire
- Dial: Grey gradient with luminous hands and hour markers
- Bracelet: Stainless steel bracelet
- Water resistance: 200 m / 20 ATM
- Functions: Hours, minutes, seconds, day, date; unidirectional rotating bezel
RA-AA0810N39B vs RA-AA0810N19B
Retailers often list both suffixes for the grey gradient Kamasu. Treat them as the same watch configuration for specs and buying decisions; Chronospride’s stock-keeping unit on this page is RA-AA0810N39B. Always match the SKU on your invoice and product page when comparing prices.
Buying Orient Kamasu in Australia
Grey Kamasu pages are a natural landing point for searches around Orient Kamasu, Orient dive watch and dive watches Australia. Chronospride focuses on clear specs, authentic stock and local fulfilment rather than hype copy.
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.
Frequently asked questions
What is the water resistance of the Orient Kamasu RA-AA0810N39B?
200 metres (20 ATM). It is built as a diver-style sports watch. Rinse after salt water, keep the crown screwed down in water, and service gaskets on a sensible schedule if you swim often.
What movement does the RA-AA0810N39B use?
Orient’s in-house F6922 automatic calibre with hand-winding, hacking seconds, day-date display and about 40 hours of power reserve.
Does the grey Kamasu have a sapphire crystal?
Yes. The RA-AA0810N39B / RA-AA0810N19B grey Kamasu uses sapphire crystal over the dial.
Is the Orient Kamasu RA-AA0810N39B good as an everyday watch?
Yes for most wrists that like a modern ~42 mm steel sports watch. The grey gradient dial is quieter than bright colourways, and the bracelet makes it a practical daily driver as well as a swim-capable piece.
How does Kamasu compare to Orient Mako?
In current line-ups the names overlap in the same diver family. Kamasu references like RA-AA0810N typically emphasise sapphire and the F6922 package; always compare the exact reference’s crystal, bracelet and dial rather than the nickname alone.
Where can I buy the Orient Kamasu RA-AA0810N39B in Australia?
This Chronospride product page is the listing for SKU RA-AA0810N39B. Authentic stock is inspected before dispatch, with free shipping on eligible Australian orders and Chronospride’s 12 months warranty handled by our team.
| Brand | Orient |
|---|---|
| Case-Size | 41.8mm |
| Band-Width | 22mm |
| Lug-Width | 22mm |
| Lug to lug size | 46.8mm |
| Case Thickness | 12.8mm |
| MPN | RA-AA0810N19B |
| Gender | Men's |
| Band-Material | Stainless Steel |
| Case-Material | Stainless Steel |
| Movement | Automatic |
| Band-Colour | Silver |
| UPC | 4942715028596 |
| EAN | 4942715028596 |
| Calibre | F6922 |
| Case-Colour | Silver |
| Face-Colour | Black Grey |
| Jewels | 22 |
| Power reserve | 40 hours |
| Watch-Shape | Round |
| Water-Resistance-Rating | 200M |
