The ROMEO5 Gen II provides a durable 1x aiming solution with its crisp 2 MOA red dot emitter powered by a CR2032 battery that can be quickly replaced. Couple with motion-activated MOTAC technology, the ROMEO5 Gen II boasts an impressive 40,000 hour runtime under standard usage. Featuring top mount ambidextrous controls that offer 10 daylight and 2 night vision settings, finding the optimal setting for your environment is quick and intuitive. Capable of withstanding some of the harshest conditions. The interchangeable I-BEAM Mount maximizes situational awareness. Sig Sauer Electro-Optics - Red Dot Romeo5 Gen II 1x20mm SOR5111