Armasight Spark CORE Night Vision Monocular NSMSPARK01CCIC1 is a highly efficient night vision monocular that allows you to see perfectly at night while protecting against temporary night blindness. The Armasight night vision monocular utilizes a single tube and single eyepiece design concept that allows you to use the monocular on each eye independently. This design reduces the risk of temporary night blindness, which is caused by letting your eyes adjust to the brighter display of your night vision device, by keeping one eye exposed to the night while the other looks through the monocular. The Arma Sight Spark CORE Waterproof Night Vision Monocular features a rugged body that is both compact and waterproof, built for demanding outdoor environments. Armasight has equipped the monocular with a built-in infrared illuminator that will allow you to see in total darkness, and the Spark can run on a single CR123A lithium battery. For a cost-effective, easy to use night vision monocular, choose the Arma-Sight Spark Night Vision 1x Monocular.