Closed circuit TV systems for security and surveillance, namely, cameras, switchers, monitors, microphones and recorders; mounting brackets adapted for computer monitors; electric cables; electric connectors; cable television convertors; pc-based DVR-NVR; multiplexers; computer mouse; computer keyboards; nautical and photographic apparatus and instruments, namely, underwater housings for cameras, underwater enclosures for cameras and underwater enclosures for photographic lenses; camera lens ...