PetSafe Free to Roam Receiver Collar

This extra receiver collar can be used to add another dog or as a replacement collar to the Free to Roam Wireless Fence? Stay+Play Wireless Fence� or the Wireless Pet Containment System. The Free to Roam receiver collar includes 5 levels of static correction plus tone only adjustable to your pet's temperament. Features: Ergonomic collar design provides added comfort for pets Operates with RFA-67D-11 battery module; expected battery life is between 1-2 months For dogs 5 pounds and up Fits neck