Technical Data
Reflex sight · illuminated dot · enclosed
Sig Sauer ROMEO-X Enclosed Pro reflex sight Circle Dot Red FDE
Fully enclosed reflex sight for pistols with the SIG PRO footprint, with motion activation, side-loading battery and low deck height.
This configuration
This version has the red Circle Dot reticle. A button press switches between dot (2 MOA), circle (32 MOA) and circle with dot. The housing is finished in Flat Dark Earth (FDE).
Features in practical use
Fully enclosed
The optical system is enclosed, sealed and argon-purged; a rear glass window closes the housing.
Motion activation (MOTAC)
The sight switches off after 2 minutes without motion and turns back on with the last brightness and reticle setting as soon as it detects movement.
15 brightness settings
There are 12 daylight and 3 night vision settings; the night vision settings are optimized for Gen 3+ night vision devices (D.A.R.C.).
Side-loading battery
The CR1632 battery is changed from the side without removing the sight and without re-zeroing; runtime is up to 20,000 hours (continuous, medium setting, dot only).
Low deck height
With a height of 0.94 in (23.9 mm) the sight allows co-witnessing with standard-height iron sights.
7075 aluminum housing
The housing is made of 7075 aluminum and the lens is aspherical and distortion free.
Waterproof to IPX-7
The manufacturer rates the sight IPX-7, meaning submersion up to 1 meter.
Torx key adjustment
Elevation and windage are adjusted with the supplied T6 Torx key; one click equals 1.0 MOA. Total travel is 60 MOA elevation and 70 MOA windage.
Included items
- Reflex sight in the selected version
- Operator's manual
- Mounting screws (Torx): M4
- T6 and T10 Torx wrenches
- CR1632 battery
Matching products
For pistols with the SIG PRO footprint (DeltaPoint Pro pattern), for example optic-ready SIG models. Glock MOS pistols (G17, G19, G26, G34, G47) need an adapter plate. The firearm is not included.
* Firearms, mounts and other accessories shown are not included unless they are expressly listed. The selected product variant and the described scope of delivery are decisive.
Sig Sauer
