Perimeter Technologies Comfort Contacts Habitat WiseWire® 18 AWG is 56%

WiseWire® 18 AWG is 56% stronger in break load or equal to 16 AWG copper wire

3 adjustable levels of static correction

The bolster is easy to install and can be removed for machine wash care

Bark Differentiation Technology: The BarkLimiter detects bark signals solely through vibrations from a dog's throat

Perimeter Technologies Comfort Contacts Habitat WiseWire® 18 AWG is 56%Comfort Contacts are manufactured in a special process that impregnates the rubber with a conductive material yet retains the comfort of flexible contacts. Veterinarians prefer rubber Comfort Contacts to help avoid serious skin irritation and injuries. Features: Not sold separately. Must be purchase with Perimeter Technologies and PetSafe Systems as an add on. Cushion your pets neck with soft rubber Help avoid serious skin irritation and injuries for