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Orient Mako Kamasu RA-AA0824L39B Watch
The Orient Mako Kamasu RA-AA0824L39B is a men's automatic dive watch with a 41.8 mm diameter. Its 316L stainless steel case, with brushed and polished finishes, features a screw-down crown at 3 o'clock and a screwed solid case back with a dolphin engraving. The unidirectional 120-click bezel with a 60-minute scale, aluminum insert and blue finish matching the dial completes the set.
The blue sunburst dial features baton indices and silver-tone hands with luminous material, plus a red-tipped seconds hand and a day and date window at 3 o'clock. The sapphire crystal protects the dial from scratches. The three-link SUS316L stainless steel bracelet fastens with a tri-fold deployant clasp with push-buttons and safety lock, and tapers from 22 mm at the lugs to 20 mm at the clasp.
The Orient F6922 in-house movement offers 22 jewels, a 40-hour power reserve and a frequency of 21,600 vibrations per hour. It includes manual winding and hacking. The declared accuracy is +25 to -15 seconds per day. Reference RA-AA0824L39B identifies this blue dial variant within the Mako Kamasu collection, also known as Kamasu III.
F6922 Automatic Sapphire 200 m Blue Aluminum Bezel Blue Sunburst Dial
Why choose this watch?
The Orient RA-AA0824L39B is aimed at those looking for an automatic men's watch with real dive specifications at a contained price. Its status as a 200 m dive watch with a screw-down crown and a unidirectional 120-click bezel places it in the field of functional divers, not style watches. The sapphire crystal is a differentiator against direct rivals that use hardened mineral, and the declared accuracy of +25 to -15 seconds per day is tighter than that of equivalent competitor calibres. The 41.8 mm case is contained compared to other divers in its category, which broadens the range of wrists it fits. The F6922 movement, with manual winding and hacking, brings the versatility of a complete automatic calibre. The whole makes a blue Orient watch that prioritises the technical sheet without renouncing a visual identity marked by the contrast between the sunburst dial and the matching bezel.
Technical specifications
Movement
- Type: automatic (mechanical self-winding).
- Calibre: Orient F6922, in-house.
- Jewels: 22.
- Power reserve: 40 hours.
- Frequency: 21,600 vibrations per hour.
- Declared accuracy: +25 to -15 seconds per day.
- Functions: hours, minutes, seconds, day and date. Manual winding and hacking.
Case and dimensions
- Reference: RA-AA0824L39B.
- Brand: Orient.
- Collection: Mako Kamasu (Kamasu III).
- Case material: 316L stainless steel.
- Finish: brushed and polished.
- Diameter: 41.8 mm.
- Thickness: 12.8 mm.
- Lug to lug: 46.8 mm.
- Lug width: 22 mm.
- Weight: 169 g.
- Crown: screw-down, at 3 o'clock.
- Case back: screwed, solid, with dolphin engraving.
- Water resistance: 200 m (20 bar).
Dial, bezel, crystal and bracelet
- Dial: blue sunburst, with baton indices.
- Hands: silver-tone, with red-tipped seconds hand.
- Luminescence: on hands and hour markers.
- Bezel: unidirectional, 120 clicks, 60-minute scale, blue aluminum insert.
- Crystal: sapphire.
- Bracelet: SUS316L stainless steel, three links.
- Clasp width: 20 mm.
- Clasp: tri-fold deployant with push-buttons and safety lock.
- Gender: men.
Frequently asked questions
What is the difference between the Orient Kamasu and the Seiko Prospex Turtle?
Both are 200 m dive watches with a screw-down crown, unidirectional bezel and Japanese movements with hacking and manual winding. The differences lie in their approach. The Kamasu uses a sapphire crystal, declares an accuracy of +25 to -15 seconds per day and offers a more contained 41.8 mm case. The Turtle uses Hardlex crystal, declares -35 to +45 seconds per day and uses a 45 mm cushion-shaped case. The Kamasu wins on specifications and size versatility; the Turtle wins on lume, design character and resale value.
Is the blue bezel aluminum or ceramic?
The bezel insert on the Orient Kamasu RA-AA0824L39B is aluminum. This material offers a matte finish and a solid colour, and is common on dive watches in this price range. Ceramic bezels, more resistant to scratches, are reserved for higher-end models.
