Explosive Collar

The explosive collar is a piece of neckwear in Fallout: New Vegas.

Characteristics
It is commonly used on slaves, and explodes via remote trigger (usually held by a slaver) or attempting to interfere with the collar's wiring.

Locations
The Brotherhood of Steel will force the Courier to equip one when they first meet as a way to make sure the Courier does not reveal their location to the enemy. The captives in Dead Money (including the player's character) are also equiped with them.

Bugs
During the mission Still in the Dark the explosive collar can be used to repair items such as the Ranger Tan Hat and the Ranger Helmet (with the Jury Rigging perk) to full condition, as the game won't remove the collar, allowing for infinite repairs to certain items.

Appearances
The explosive collar appears in Fallout: New Vegas.