Orient · Orient F6922

Orient Kamasu, Mako and Ray power reserve: inside the Orient F6922

The Orient Kamasu, the current Mako, the Ray II and the Neo Classic Sports divers all run on Orient's in-house F6922. From a full wind it lasts about 40 hours, a little under two days.

Updated September 2026 · Based on manufacturer specs, published reviews and watchmaker/owner reports

Watches that use the Orient F6922

If your Orient has both a day and a date at 3 o'clock and it hacks, it very likely has an F6922 inside. It's Orient's day-date automatic and powers most of the brand's affordable divers. Date-only Orients use its siblings: the Bambino uses the F6724, and the Mako 40 and Stretto use the F6722.

Specs at a glance

History and where it came from

Orient has made its own movements in Japan for decades and is now part of Seiko Epson. The Mako arrived in 2004 and, as Monochrome put it, became a staple among watch nerds much like Seiko's SKX. But the original Mako and Ray had one real weakness: their older Orient caliber couldn't hack or be hand-wound, so you couldn't set them to the second or top them up from the crown.

The F6 family fixed that. The F6922 kept the day-date layout and 3 Hz beat, added hacking and hand-winding, and came with a published rating of -15/+25 seconds a day. It went into the Mako II and Ray II, then into the Kamasu (Mako III) with its sapphire crystal, and it's still the movement in the current Mako, the 75th-anniversary limited editions and the retro Neo Classic Sports.

It's a simple, conservative design. Deployant notes it's made at Orient's facility in Shiojiri, Japan, and the brand has built its budget reputation on movements like this that last for years without attention.

Accuracy in the real world

Orient rates the F6922 at -15 to +25 seconds a day. That's tighter than the Miyota 8215's -20/+40 and similar to Seiko's 4R36 at the same price.

Real-world results are usually better. Deployant's two weeks with a dark green Kamasu found it kept better time than the spec suggests, and owners commonly report something in the region of +5 to +10 seconds a day. There's variation from watch to watch because these movements aren't finely regulated at the factory. A watchmaker can usually tighten one up cheaply, and a sudden jump in rate is often magnetism, which a quick demagnetization fixes.

Reliability and servicing

The F6922 has kept Orient's reputation for toughness. Movement failures are rarely reported, and many owners describe years of daily wear on a Kamasu or Ray II without a service.

• Less universal than an NH35. It's used almost only in Orient watches, so it isn't the drop-in part that Seiko's NH-series is. Replacement movements and parts are still available.
• Servicing. Any watchmaker who works on Japanese automatics can service it. It's a conventional layout.
• Replace versus service. On a watch that cost a few hundred dollars, a replacement movement is often more economical than a full service.

Quirks worth knowing

• Day and date setting. Both quick-set from the crown's first position. Avoid doing it in the evening while the calendar is changing. Here's why.
• Winding from stopped. Around 30 turns of the crown fills the spring before you put it on.
• 3 Hz sweep. Six ticks a second, so the seconds hand steps more visibly than a 4 Hz movement's. Normal for this class.
• Plan around 40 hours. Orient quotes "40 hours or more", but that's from a full wind. A lightly worn Kamasu will stop sooner.

How it compares

• Seiko 4R36: the Seiko 5 Sports' movement and the F6922's closest rival. Also a hacking, hand-winding, 3 Hz day-date, with a 41-hour reserve and a similar tolerance. In practice they perform very similarly.
• Seiko NH35: the date-only version of Seiko's movement sold to other brands. Similar performance and much more widely used.
• Miyota 8215: similar reserve, but a wider tolerance and, on older units, no hacking.
• Orient Star F6N43: the step up within Orient's family. Same 3 Hz beat, but 50 hours and a power reserve indicator.

Living with the 40-hour reserve

Forty hours is the F6922's weak point. Take your Kamasu off at 6pm on Friday and it will stop around 10am on Sunday, earlier if a desk day left it short of full. Then you're resetting the time, the date and the day, which is the most fiddly reset any three-hand watch asks of you.

If a Mako or Ray II is one of several watches you wear, Watch Winder counts down the reserve for each watch you own and reminds you before it stops, so you can wear it or give the crown thirty turns before the calendar needs setting. For a one-off check, the "Will my watch stop?" calculator tells you whether it'll still be running.

Verdict

The F6922 turned Orient's affordable divers into complete packages. It's tough, usually more accurate than its spec, and it hacks and hand-winds where the old Mako didn't. The 40-hour reserve is its real limitation, especially with a day and date to reset. As a first automatic in a Kamasu or Mako, it's as dependable as anything at the price.

FAQ

How long does an Orient Kamasu run off the wrist?

About 40 hours from a full wind, the F6922's rated reserve. A lightly worn watch will stop sooner.

Does the Orient Kamasu hack and hand-wind?

Yes. The F6922 stops the seconds hand when you pull the crown out fully, and you can wind it by turning the crown.

Does the Orient Mako hack?

The Mako II and the current Mako with the F6922 do. The original Mako from 2004 used an older caliber that can't hack or be hand-wound.

How accurate is the Orient Ray II?

Its F6922 is rated at -15 to +25 seconds a day. Many owners see roughly +5 to +10 seconds a day in practice.

Why did my Orient Kamasu stop over the weekend?

The F6922 only holds about 40 hours, so a watch taken off on Friday evening usually stops on Sunday morning. Wind it fully by the crown if you want it to last longer.

Is the Orient F6922 better than the Seiko 4R36?

They're closely matched in accuracy, features and reliability, with the Seiko holding about an hour more reserve. Pick the watch you prefer.

What's the difference between the F6922 and F6722?

The F6922 shows the day and date. The F6722 shows the date only and is used in the Mako 40 and Stretto. Both have a 40-hour reserve.

Sources

• Orient UK: Orient Mako RA-AA0824L specifications
• Monochrome: Orient Neo Classic Sports collection
• Monochrome: Orient Mako 75th Anniversary limited editions
• Deployant: Review of the dark green Mako III Kamasu
• Monochrome: Orient USA celebrates 10 years of the Mako

Keeping it running

• On an average day an automatic gains roughly 4 hours of reserve per hour on the wrist, so about 10 hours of wear fills the Orient F6922. Desk days charge more slowly.
• Most automatics can also be wound by the crown. If yours has stopped, a few dozen turns gets it going before you put it on.
• Off the wrist it stops about 40 hours after it was last full. Stopped sooner?
• On a watch winder, start at about 650 turns per day, both directions. Winder settings for every movement.
• If it does stop, don't set the date between 9pm and 3am. Check if it's safe.

All Orient movements

Never let it stop

Watch Winder counts down the reserve of every watch you own and reminds you before one stops. It already knows the Orient F6922: type your watch's name and the reserve fills itself in.

Manufacturer's published figure. Real reserve varies with the watch's age and service; check your manual.