Is your Kamasu
the real deal?
The Orient Kamasu is one of the most popular affordable divers on the market. Its great value and upgraded features over the Mako and Ray make it a frequent target for counterfeits. Here's how to tell the difference.
How to authenticate a Kamasu
Sapphire Crystal
The Kamasu was a significant upgrade from the Mako and Ray because it introduced a sapphire crystal to Orient's affordable diver lineup. Genuine sapphire is extremely scratch-resistant and has a distinct clarity. Counterfeits often substitute a mineral crystal, which scratches more easily and may show a slight tint or distortion compared to true sapphire.
In-House F6922 Caliber
The Kamasu uses Orient's in-house F6922 automatic movement, visible through the display case back. This caliber features hacking (second hand stops when setting time) and hand-winding, with approximately 40 hours of power reserve at 21,600 vph. The movement should be cleanly finished with the Orient logo on the rotor. Fakes may use a generic movement or lack the display case back entirely.
200m Water Resistance
The Kamasu is rated to 200 meters (20 bar) water resistance, a true ISO 6425 diver specification. The case back should be stamped with the 200M / 20BAR rating. The screw-down crown should engage smoothly with positive threading. Counterfeits may claim the rating but lack proper gasket sealing or have a press-fit (non-screw-down) crown.
Unidirectional Bezel with 120 Clicks
The Kamasu's dive bezel rotates counterclockwise only and features 120 precise clicks (one per half-minute). The action should feel firm and deliberate with no back-play. The bezel insert should be cleanly printed with crisp minute markings and a luminous pip at 12. Counterfeits often have sloppy bezel action, bidirectional rotation, or fewer click stops.
Orient Logo & Day-Date at 3 O'Clock
The Orient logo (double-headed lion emblem) should be cleanly printed or applied at the 12 o'clock position. The day-date complication sits at 3 o'clock with both English and another language (usually Japanese or Spanish) day options. On genuine models, the day and date windows are sharply cut with clean printing. Fakes may have a blurry logo or misaligned day-date window.
Solid Bracelet with Diver Extension
The Kamasu's stainless steel bracelet features solid end links that fit flush against the case, a fold-over clasp with safety lock, and a diver's extension for wearing over a wetsuit. The bracelet should have a satisfying heft with no rattling or loose pins. Counterfeits often use hollow links, have poor clasp alignment, or lack the diver extension entirely.
Kamasu counterfeit warning signs
Mineral Crystal Instead of Sapphire
The sapphire crystal is the Kamasu's key differentiator from the Mako and Ray. If the crystal scratches easily or shows a greenish tint when viewed at an angle, it is likely mineral glass. A simple water drop test can help: water beads up tightly on sapphire but spreads on mineral glass. This is the single most common indicator of a fake Kamasu.
No Display Case Back
Genuine Kamasus feature a see-through display case back that reveals the F6922 movement. If the case back is solid stainless steel with no window, or uses a cheap mineral glass window with poor visibility, the watch is likely counterfeit. The display back should show the Orient-branded rotor and a cleanly finished movement.
Poor Bezel Action
The Kamasu's unidirectional bezel should have crisp, defined 120-click action with no wobble or back-play. If the bezel feels mushy, rotates in both directions, has fewer click positions, or wobbles when pressed, it is a strong sign of a counterfeit. The bezel should align precisely with the dial markers at each click position.
Incorrect Orient Logo
The Orient double-headed lion logo at 12 o'clock should be sharp, properly proportioned, and cleanly printed. On counterfeits, the logo may be blurry, too thick or thin, poorly centered, or use an outdated version of the emblem. Compare the logo carefully against official Orient product images for your specific reference number.
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Frequently asked questions
What is the difference between the Orient Kamasu, Mako, and Ray?
The Kamasu (RA-AA0001B/RA-AA0003R) is Orient's upgraded diver featuring a sapphire crystal and the newer F6922 caliber with hacking and hand-winding. The Mako II uses the same F6922 movement but has a mineral crystal. The Ray II also uses the F6922 with mineral crystal but features a different dial design with applied indices. The Kamasu is considered the premium option due to the sapphire crystal upgrade.
What are the specs of the Orient F6922 caliber?
The Orient F6922 is an in-house automatic movement beating at 21,600 vph (6 beats per second). It offers approximately 40 hours of power reserve, hacking (second hand stops when setting time), and hand-winding capability. These features were not available on Orient's older F6921 caliber found in the original Mako and Ray, making the F6922 a meaningful upgrade.
What color options are available for the Orient Kamasu?
The Orient Kamasu is available in several dial colors including black (RA-AA0001B), red (RA-AA0003R), green (RA-AA0004E), and blue (RA-AA0002L). All variants feature the same sapphire crystal, F6922 movement, and 200m water resistance. The red variant is particularly popular and distinctive in the affordable diver category.