The OTS-X is the latest in ATN's successful OTS thermal image system line. The OTS-X is rugged enough to used in difficult conditions, yet its compact and lightweight design makes easily carried in a cargo pocket. It was designed with both law enforcement and sportsmen alike. The OTS-X features the ability to interchange the objective lens so you can have multiple magnification levels based on your needs. With all these features, it's surprising the OTS-X is incredibly affordable. Features: Ergonomic DesignCompact Rugged ConstructionInterchangable OpticsE-ZoomDigital Brightness ControlIcon Based Menu SystemBlack/White Polarity800x600 DisplayMade in US ATN OTS-X-E330 30mm 60Hz Thermal Imager TIMNOTSXE330