Orient Caliber F4902
Orient Caliber F4902

Orient Caliber F4902

Automatic
·12 Comments·
ManufacturerOrient
Caliber NumberF4902
In-House?
Yes
Movement TypeAutomatic
Jewels21
Vibrations Per Hour
21,600 bph
Anti-Shock SystemSeiko Diashock
Rotor Winding Direction
Bi-directional (Magic Lever)
Power Reserve
~40 hours
Hand Windable?
No
Hacking?No
Lift Angle(Add to comments below…)
FunctionsCentral hours, central minutes, central sweeping seconds, day/date at 3:00
Country of ManufactureJapan
Known ModelsTriStar DENEB from the Tri-Star Collection (Please add your watch and more known models to the comments below…)

The Orient caliber F4902 is a self-winding automatic movement with 21 jewels. Orient makes their movements in-house in Japan. This is a non-hacking and non-handwinding movement. You may have seen other sites list this movement incorrectly as caliber F49-02 or F.4902, but Orient officially writes the caliber number as F4902.

F4902 VS 46943:

The Orient caliber F4902 is said to be an upgrade to the caliber 46943. The main difference is that the older 46943 has a pusher on the side (2:00) to change the calendar (day of the week), while the newer F4902 calendar can be corrected via the crown.

Power Reserve:

The Orient caliber F4902 has a power reserve of 40 or more hours.

Setting the date:

Avoid setting the date on your F4902 watch within the hours of 8:00pm to 4:00am.

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Rodrigo Barbosa
Rodrigo Barbosa
2 years ago

Caliber of my Orient Automatic Sport F49SS005 G2SX 

3
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Breno Althoff
Breno Althoff
1 year ago

Caliber of my Orient F49RC003

2
Reply
Gilson Azevedo
Gilson Azevedo
1 year ago

This is caliber of my new watch Orient Automatic Tri Star F49SS013-D1SX (Blue),
the most beautiful watch of my collection, produced in the city of Manaus, Brazil.
Este é o calibre do meu novo relógio automático Orient Três Estrelas F49SS013-D1SX (Azul), o relógio mais bonito da minha coleção, produzido na cidade de Manaus, Brasil.

5
Reply
Florin C
Florin C
4 months ago
Reply to  Gilson Azevedo

Central and South America, but especially Brazil, seem to get some very special Orient models, some of which I would love to have the opportunity to buy, like all those colourful 3-stars: Blue-Ciel, Emerald-Green, Ruby-Red, all those degrade-dials!

1
Reply
Ramon Candido
Ramon Candido
1 year ago

The F4902 Caliber can be found in a large number of newer Orient models, from diver watches to other kinds, like casual-looking ones, fliegers and so on. The reference for those models always start with F49, followed by the material indicating code (SS for Stainless Steel, TT for Titanium, SC for steel case and leather strap) and a number. I own two watches powered by the F4902: The limited edition diver F49TT001 and the flieger-looking F49SC012, wich has an glass back, allowing you to see the movemente. Classy.

3
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admin
Author
calibercorner
1 year ago
Reply to  Ramon Candido

Hi Ramon, thank you for sharing this information with the community 🙂

0
Reply
Eray
Eray
7 months ago

Hello,
Does the rotor of caliber F4902 have bi-directional winding?

1
Reply
admin
Author
calibercorner
7 months ago
Reply to  Eray

Hi Eray, yes, the F4902 has bi-directional winding via a Magic Lever type pawl system. Learn more here: https://calibercorner.com/seiko-magic-lever/

0
Reply
Eray
Eray
6 months ago

Hello.

Does the white dial Orient FAB00009W9 watch use the F4902 movement?

0
Reply
admin
Author
calibercorner
6 months ago
Reply to  Eray

Hi Eray, it appears that the Orient watch model FAB00009W9 is powered by the caliber F4902. However, as with many Orient watches, this is just a best guess until you open the watch to confirm. Orient has a huge fan base, but something to consider when deciding to purchase one of their watches is that they aren’t the most transparent watch brand when it comes to their movements. Also something to consider, is that the seller of the watch should be able to confirm the caliber inside the watch. If they are unable or unwilling to disclose this important detail,… Read more »

0
Reply
Florin C
Florin C
4 months ago

I have the 46943 in my Orient 3-star that I bought in 2005 – it still runs great, accuracy within +10 seconds/day, usually less than that. Just took it into a watch shop 3-4 times since then for simple maintenance.
The F4902 I have in my newer 3-star (AB0D-C0-A C150245, tobacco dial, golden hands and indices) which I got as a present from my work mates when i quit my job 2 years ago and it is just as accurate and reliable.
These calibers are just as reliable and legendary as Seiko’s 7S26.

0
Reply
Frederic
Frederic
3 months ago

It’s the caliber of my Orient RA-AB0F07B19B (dark blue dial).

0
Reply
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