ROMEO9T RIFLE RED DOT SIGHT FEATURES: Dual (Red and Green) independently zeroed emitters. Designed and tuned for passive NV performance, including NV Override Control Proprietary optical design mitigates downrange light signature. 50,000 hour runtime and 10 hour reserve without battery. Titanium shroud and mounting hardware IPX8 Waterproof and fog-proof performance (2 ATM for 2 Hours) Tested to MIL-810-STD Assembled in the USA Use cases for dual aiming points: Changes in ammo such as 300 Blackout Supersonic and Subsonic Caliber Exchange Kits Suppressed and Unsuppressed Different Zero Distances Mfg: Sig Sauer, Inc.