Surveillance rounds are subsonic slugs fitted with miniature cameras and micro-transmitters. The round can be fired into any solid surface. Once affixed, it transmits its view to a monitor designed to receive the round’s signal (see Surveillance Round Receiver in the Weapon Accessories section). The round’s field of vision is only 90 degrees and is centered on the line from the firing point to the impact point. The field of vision cannot be changed, and the surveillance round does not pick up audio.