Receiver Collar for Medium to Large Dogs - DogWatch ® R9 - Hidden Fence
PetSafe Wireless Pet Fence Pet Containment System, Covers up to 1/2 Acre, for Dogs Over 8 lb, Waterproof Receiver with Tone/Static Correction - from The Parent Company of Invisible Fence Brand :
PetSafe Stay + Play Wireless Stubborn Add-A-Dog Extra Collar - PIF19-14186