The All Purpose Application Drone was created for the purpose of surveillance. The drone is controlled from a small tablet. If used in combat, requires an item interaction to command it. Does not require concentration.
The Micro Drone is small enough that it is mistaken for a flying insect. It has audio and no video capabilities. It is largely self-flying, guiding itself onto a wall or ceiling in the room you designate. It has a 1-minute lifespan and a range of 200 feet.
The Quadrotor has both audio and visual capabilities, but it is slightly noisy and more visible. It is fully controllable and has a 10-minute lifespan with a range of 1,000 feet.
The Stalker Drone has only visual capabilities but does have night vision. Given its operational range, it is effectively as invisible as the Micro Drone. It is fully controllable and has a 1-hour lifespan with a range of 1 mile.