The probes had a range of 4.3x1010 kilometers. They were powered by a dual-mode matter/antimatter engine which could propel them at warp two. Their sensors included extended passive data gathering and recording equipment and fully automated systems for mission execution and return. (TNG reference: Star Trek: The Next Generation Technical Manual) In addition to that, these probes had a hull made from stealth material and could be used for tactical purposes with the addition of a sensor jammer packet. (TNG reference: Star Trek: The Next Generation Technical Manual)