Kamasu
Ref. RA-AA0003R39B · “Kamasu”
- Case diameter
- 41.9 mm
- Manufacturer spec
- Lug-to-lug
- 47 mm
- Manufacturer spec
- Thickness
- 12.8 mm
- Manufacturer spec
- Lug width
- 22 mm
- Manufacturer spec
Retail price $580 (US, Oct 2026)
How the Kamasu wears
Its lugs add only 5.1 mm to the 41.9 mm case, against 7.1 mm typical across the almanac, so it wears smaller than its diameter suggests.
On our fit model it sits best on wrists from 6.5" to 7.75" (16.5–19.7 cm); below 6.5" the lugs start to reach the edge of the wrist.
At 12.8 mm thick it is slimmer than 54% of the 79 other dive watches we've measured, so it slides under a cuff more easily than most.
Its 22 mm lug width is one of the most common strap sizes; 27 other watches here share it, so aftermarket straps are easy to find.
Will the Kamasu fit your wrist?
With a 47 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.
| Wrist | Flat width (est.) | Fit |
|---|---|---|
| 6" | 47.2 mm | Lugs overhang |
| 6.5" | 51.2 mm | Ideal fit |
| 7" | 55.1 mm | Ideal fit |
| 7.5" | 59.1 mm | Ideal fit |
| 8" | 63 mm | Wears small |
Specifications
- Reference
- RA-AA0003R39B
- Collection
- Sports
- Status
- In production
- Case material
- stainless steel
- Crystal
- sapphire
- Water resistance
- 200 m
- Bezel
- unidirectional rotating
- Dial
- red
- Strap / bracelet
- stainless steel bracelet
- Style
- Dive
Movement
- Caliber
- Orient F6922
- Type
- automatic
- Power reserve
- 40 hours
- Frequency
- 21,600 vph (3 Hz)
- Jewels
- 22
3 other watches use the Orient F6922
Takes 22 mm straps. See other 22 mm watches and straps.
More Sports references
Watches that wear the same size
Other watches within 1.5 mm of its lug-to-lug.
- BalticAquascaphe Classic
- Case
- 39 mm
- Lug-to-lug
- 47 mm
- Thick
- 13 mm
- BalticAquascaphe GMT MK II
- Case
- 39.5 mm
- Lug-to-lug
- 47 mm
- Thick
- 13.8 mm
- BalticAquascaphe MK2 39.5mm
- Case
- 39.5 mm
- Lug-to-lug
- 47 mm
- Thick
- 12.9 mm
- BalticBicompax 002
- Case
- 38 mm
- Lug-to-lug
- 47 mm
- Thick
- 13 mm
- BalticHMS 002
- Case
- 38 mm
- Lug-to-lug
- 47 mm
- Thick
- 13 mm
- BreitlingNavitimer B01 Chronograph 41AB0139211B1A1
- Case
- 41 mm
- Lug-to-lug
- 47 mm
- Thick
- 13.6 mm
Same 22 mm lug width
All 22 mm watchesThese take the same straps as the Kamasu.
- BreitlingChronomat B01 42AB0134101B1A1
- Case
- 42 mm
- Lug-to-lug
- —
- Thick
- 15.1 mm
- BreitlingSuperocean Automatic 42A17375E71C1S1
- Case
- 42 mm
- Lug-to-lug
- 47.7 mm
- Thick
- 12.6 mm
- BreitlingSuperocean Heritage B20 Automatic 42AB2010121B1S1
- Case
- 42 mm
- Lug-to-lug
- —
- Thick
- 14.3 mm
- CitizenPromaster Skyhawk A-T Blue AngelsJY8078-52L
- Case
- 45 mm
- Lug-to-lug
- —
- Thick
- 14.5 mm
- CitizenTsuyosa AutomaticNJ0150-56L · “Tsuyosa”
- Case
- 40 mm
- Lug-to-lug
- 49.5 mm
- Thick
- 11.7 mm
- Dan Henry1970 Automatic Diver 40mmDH70-40M-O12
- Case
- 40 mm
- Lug-to-lug
- 45.7 mm
- Thick
- 14.8 mm