The Orient Kamasu RA-AA0811E19B is a Japanese automatic diver built around the features people actually search for: sapphire crystal, 200 m water resistance, an in-house movement with hand-winding and hacking, and a deep green gradient dial that can look almost black indoors and opens into teal-green in brighter light.
Case diameter sits just under 42 mm at about 41.8 mm, thickness around 12.8 mm, with a 22 mm stainless steel bracelet. The F6922 calibre brings day and date, roughly 40 hours of power reserve, and practical extras (hacking seconds, manual wind) that make daily ownership easier. 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 green Kamasu stands out
- Green gradient dial — darker at the edge and richer toward the centre; more depth than a flat black dial, and a clear point of difference from blue or grey Kamasu colourways.
- 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 and office-to-weekend piece on the supplied bracelet.
Who it suits
Buyers who want an Orient dive watch with a coloured dial that still wears quietly under a sleeve; people comparing Kamasu vs Mako for sapphire and F6922 specs; and anyone building a first serious automatic diver under a mid-range budget. If you need a compact dress watch instead, look at the Bambino line — this reference is a full sports diver.
Specifications — Orient Kamasu RA-AA0811E19B
- Reference / SKU: RA-AA0811E19B
- Collection: Orient Kamasu (Mako III / AA08 diver family)
- Movement: Orient calibre F6922, automatic, hand-winding, hacking seconds, ~40-hour power reserve, 22 jewels
- Case: Stainless steel, approx. 41.8 mm diameter (3–9), ~46.8 mm lug-to-lug, ~12.8 mm thick
- Crystal: Sapphire
- Dial: Green gradient with luminous hands and hour markers; day and date at 3 o’clock
- Bezel: Unidirectional rotating dive bezel
- Bracelet: Stainless steel bracelet, 22 mm lug width
- Water resistance: 200 m / 20 bar
- Case back: Solid / screw
Kamasu, Mako, and colour naming
Retail titles sometimes call this reference a “black” Kamasu because the dial can read very dark in low light. Official colour for RA-AA0811E19B is a green gradient dial. Always match the reference number on the dial side and packaging rather than nickname alone when comparing listings.
Buying Orient Kamasu in Australia
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-AA0811E19B?
200 metres (20 bar). It is built as a dive-style sports watch suitable for swimming and water sports when the crown is fully secured. It is not a substitute for professional dive computers or neglected gasket maintenance.
What movement does the RA-AA0811E19B use?
Orient’s in-house F6922 automatic: hand-winding, hacking seconds, day-date, roughly 40 hours of power reserve, and 22 jewels.
Is the dial black or green on RA-AA0811E19B?
Green gradient. In shade it can look near-black or deep teal; in brighter light the green comes through clearly. Catalogue and legacy store titles that say “black” are describing the dark appearance, not a flat black dial reference.
Does the Kamasu RA-AA0811E19B have a sapphire crystal?
Yes. Scratch-resistant sapphire is one of the main reasons this family competes so well against mineral-crystal divers at a similar price.
Is the Orient Kamasu good as an everyday watch?
Yes for most people who like a modern ~42 mm steel sports watch. The bracelet and 200 m rating make it practical as a daily driver as well as a swim-capable piece. Dressier shirts may prefer a thinner Bambino.
Where can I buy the Orient Kamasu RA-AA0811E19B in Australia?
This Chronospride product page is the listing for SKU RA-AA0811E19B. 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-AA0811E19B |
| Gender | Men's |
| Band-Material | Stainless Steel |
| Case-Material | Stainless Steel |
| Movement | Automatic |
| Band-Colour | Silver |
| UPC | 4942715028602 |
| EAN | 4942715028602 |
| Case-Colour | Silver |
| Calibre | F6922 |
| Face-Colour | Black Green |
| Jewels | 22 |
| Power reserve | 40 hours |
| Watch-Shape | Round |
| Water-Resistance-Rating | 200M |
