Orient Kamasu RA-AA0818L19B Blue Automatic Diver Watch (Mako III)

The Orient Kamasu RA-AA0818L19B (also known as Mako III in some markets) is a blue-dial automatic diver-style sports watch with a sapphire crystal and 200-metre water resistance. At roughly 41.8–41.9mm, it sits in the sweet spot for everyday wear: substantial enough for a tool-watch look, compact enough for office sleeves, and finished on a stainless steel bracelet with a 22mm lug width.

Buyers searching for an Orient Kamasu or Mako III usually want three things this reference delivers: in-house automatic movement (Calibre F6922), scratch-resistant sapphire, and genuine dive-style water resistance without stepping into luxury pricing. The matte blue dial with lume, day-date windows, and a unidirectional rotating bezel make it a clear step up from fashion divers that only look the part.

Why the RA-AA0818L19B works

• Sapphire crystal at this price band — clearer and more scratch-resistant than mineral glass found on many entry divers.
• F6922 in-house automatic — hand-winding, hacking seconds, about 40-hour power reserve, 22 jewels, 21,600 vph.
• 200m water resistance — suitable for swimming and water sports when the watch is correctly sealed and maintained; not a substitute for professional dive certification gear.
• Blue dial + steel bracelet — a versatile sports combination that works with casual and smart-casual outfits year-round in Australia.

Technical specifications

• Reference / SKU: RA-AA0818L19B
• Names: Orient Kamasu / Mako III (market naming varies)
• Movement: Orient Calibre F6922 automatic (hand-winding, hacking)
• Jewels / frequency: 22 jewels, 21,600 vibrations per hour
• Power reserve: approximately 40 hours
• Case: stainless steel, approximately 41.88mm diameter, about 12.8mm thickness, about 46.8mm lug-to-lug
• Crystal: sapphire
• Case back: solid screw-down style case back (tool-watch construction)
• Dial: blue with luminescent hands and markers; day and date display
• Bezel: unidirectional rotating dive-style bezel
• Bracelet: stainless steel, approximately 22mm lug width
• Water resistance: 200 metres / 20 bar

Who it suits

Pick the blue RA-AA0818L19B if you want a daily automatic sports watch with real water resistance, prefer sapphire over mineral glass, and like the Kamasu/Mako III case geometry more than larger modern divers. It is a strong alternative to quartz fashion divers and a natural companion if you already own a dress Bambino and need a weekend or travel sports piece.

Frequently asked questions

What is the water resistance of the Orient Kamasu RA-AA0818L19B?

200 metres (20 bar). That supports swimming and many water activities when gaskets and the crown are in good condition. Always rinse after salt water and service seals over time. A dive-style rating does not replace proper dive training or professional equipment.

What movement does the RA-AA0818L19B use?

Orient Calibre F6922: automatic winding with manual winding and hacking seconds, roughly 40 hours of reserve, 22 jewels, and 21,600 vph. It is Orient’s workhorse sports calibre used across the Kamasu / Mako III family.

Is the Orient Kamasu the same as the Mako III?

Yes in practice for this generation: Kamasu and Mako III refer to closely related (often identical) diver-style models sold under different regional names. Specs that matter—sapphire, F6922, ~41.8mm case, 200m WR—align on the RA-AA08 series including RA-AA0818L19B.

How does the blue RA-AA0818L19B compare to other Kamasu dial colours?

The case, movement, sapphire crystal, and 200m rating are shared across colourways. Blue is the most versatile everyday dial; red or other limited colours read louder on the wrist. Choose blue if you want one sports automatic that pairs with denim, navy, grey, and black without fighting your wardrobe.

Where can I buy the Orient Kamasu RA-AA0818L19B in Australia?

This listing is available from Chronospride with authentic stock inspected before dispatch and 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.