The collars come in many shapes and size pending on who they are made for but the most common are metal collars with a locking mechanism wired to an explosive charge that goes of if the collar is tampered with or if they do not receive an all-clear signal from a slave collar transmitter tower linked to a Holo-terminal, they also come extra built-in functions depending on the model of the collar.

The Mark One (also known as the training collar) is the common choice of slave seller who are moving a common humanoid stock and the choice of a slave owner who plans to keep this slave isolated most of the time or uses them in bulk where lose of the slave is acceptable. Mark ones come with the following features, Pain modual, Drug injector, basic programming, seeker mode, basic level package 1 and basic Anti-hack protection.

Cost: 100 credits (50 gold) Weight: 10 lbs