Wireless Freedom: The PetSafe Stay & Play Wireless Fence Receiver Collar can be used to add additional dogs to your Stay & Play Wireless Fence system so all your pets can safely enjoy outdoor play Safe Wireless Fence: With 5 adjustable correction levels, a tone-only training mode, and static-free reentry, this static collar tailors to your dog's temperament and reinforces positive behavior Adjustable Neck Collar: The waterproof, rechargeable receiver collar fits dogs more than 6 months old weighing at least 5 lb and offers adjustable neck sizes from 6-28 in Global Mission, Local Care: With U.S. roots and worldwide reach, PetSafe delivers vet- and trainer-recommended solutions and exceptional customer support to create fields of joy for pets 25 Years of Trust: Since 1998, PetSafe has created safe, innovative, and trusted products that bring joy, enhance pet lives, and support the lifelong bond between pets and their families