Photos: Tempus Shop
Files / Orient / ref. RA-AA0001B
Orient Kamasu
The brand’s do-everything diver, and the only one here with a sapphire crystal.
The verdict on 5 criteria4.1 / 5
Score weighted for a dive watch
Movement
Crystal
Water resistance
Finish
Fair price
Where to pay lessChecked 12 November 2026
Only one retailer checked so far. More are on the way.
See the offer at Tempus · €399The button leads to today’s price. Affiliate link: the retailer pays us a commission, at no extra cost to you.
Who it is for
Anyone who wants a single watch for everything, swimming included.
Who it is not for
Anyone looking for a slim watch to slip under a cuff.
The real flaw
A steel bracelet whose quality does not match the case.
Investigation
What you need to know
The best-equipped diver in the range, with a sapphire crystal.
- Sapphire crystal
- Water resistant to 200 m, rotating bezel
- Steel bracelet below the standard of the rest
Desk research, without handling the watch.
- Reference
- RA-AA0001B
- Movement
- Automatic, designed by Orient
- Diameter
- 41.8 mm
- Crystal
- Sapphire
- Water resistance
- 200 m
- Hand winding
- Yes
Questions
The short answers
Is the Orient Kamasu a good watch?
The brand’s do-everything diver, and the only one here with a sapphire crystal. It scores 4.1 out of 5, weighted for a dive watch.
Can you swim with the Orient Kamasu?
Yes. It is water resistant to 200 m, which covers swimming.
Which movement powers the Orient Kamasu?
An automatic movement designed by Orient. It can also be wound by hand, and the seconds hand stops when you set the time.
Does the Orient Kamasu’s crystal scratch?
It has a sapphire crystal, the most scratch-resistant at this price level.
What size is the Orient Kamasu?
Its case measures 41.8 mm in diameter.
Where can you buy the Orient Kamasu at the best price?
At our check on 12 November 2026, the lowest price was €399 at Tempus.