M-Force
Ref. RA-AC0L01B · “M-Force”
- Case diameter
- 45 mm
- Manufacturer spec
- Lug-to-lug
- 52 mm
- Manufacturer spec
- Thickness
- 13.2 mm
- Manufacturer spec
- Lug width
- 20 mm
- Manufacturer spec
Retail price $605 (US, Oct 2026)
How the M-Force wears
Its lugs add 7 mm to the 45 mm case, close to the 7 mm typical across the almanac, so its diameter is a fair guide to how it wears.
On our fit model it sits best on wrists from 7.25" to 8.5" (18.4–21.6 cm); below 7.25" the lugs start to reach the edge of the wrist.
At 13.2 mm thick it is thicker than 60% of the 124 other dive watches we've measured, so expect it to sit tall on the wrist.
Its 20 mm lug width is one of the most common strap sizes; 156 other watches here share it, so aftermarket straps are easy to find.
Will the M-Force fit your wrist?
With a 52 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 | Lugs overhang |
| 7" | 55.1 mm | Snug, lugs near the edge |
| 7.5" | 59.1 mm | Ideal fit |
| 8" | 63 mm | Ideal fit |
Specifications
- Reference
- RA-AC0L01B
- Collection
- Sports
- Status
- In production
- Case material
- stainless steel (SUS316L), grey-plated bezel
- Crystal
- flat sapphire (AR coating)
- Water resistance
- 200 m
- Bezel
- unidirectional diver's bezel
- Dial
- black
- Strap / bracelet
- stainless steel bracelet, trifold deployant buckle with push button and security latch
- Weight
- 206 g
- Style
- Dive, Sport
Movement
- Caliber
- Orient F6727
- Type
- automatic
- Power reserve
- 40 hours
- Jewels
- 22
- Accuracy
- +25/-15 s/day
Takes 20 mm straps. See other 20 mm watches and straps.
More Sports references
Watches that wear the same size
Other watches within 1.5 mm of its lug-to-lug.
- BulovaPrecisionist X Sport96B349
- Case
- 44.5 mm
- Lug-to-lug
- 52 mm
- Thick
- 17.4 mm
- HamiltonKhaki Field Titanium Auto 42mmH70545140
- Case
- 42 mm
- Lug-to-lug
- 52 mm
- Thick
- 11.4 mm
- TudorPelagos FXDM25707B
- Case
- 42 mm
- Lug-to-lug
- 52 mm
- Thick
- 12.8 mm
- CertinaDS PH200M Powermatic 80C036.407.18.040.00
- Case
- 42.8 mm
- Lug-to-lug
- 52.1 mm
- Thick
- 11.9 mm
- TudorBlack Bay 68M7943A1A0NU-0001
- Case
- 43 mm
- Lug-to-lug
- 51.8 mm
- Thick
- 13.6 mm
- Nomos GlashütteClub Sport neomatik 42 date black781
- Case
- 42 mm
- Lug-to-lug
- 52.3 mm
- Thick
- 10.2 mm
Same 20 mm lug width
All 20 mm watchesThese take the same straps as the M-Force.
- AutodromoMonoposto Series Two (Moss Green)BP-002-MG
- Case
- 43 mm
- Lug-to-lug
- 46 mm
- Thick
- 11 mm
- BalticAquascaphe Classic
- Case
- 39 mm
- Lug-to-lug
- 47 mm
- Thick
- 13 mm
- BalticAquascaphe Dual-Crown Black
- Case
- 39 mm
- Lug-to-lug
- 47 mm
- Thick
- 11.9 mm
- BalticAquascaphe GMT MK II
- Case
- 39.5 mm
- Lug-to-lug
- 47 mm
- Thick
- 13.8 mm
- BalticAquascaphe MK2 37mm
- Case
- 37 mm
- Lug-to-lug
- 45 mm
- Thick
- 12.9 mm
- BalticAquascaphe MK2 39.5mm
- Case
- 39.5 mm
- Lug-to-lug
- 47 mm
- Thick
- 12.9 mm