PetSafe Stay n Play Wireless Fence Receiver Dog Collar This extra receiver collar can be used to add to another pet or as a replacement collar to the Stay + Play Wireless Fence. It is also compatible with the original Wireless Containment System (PIF-300). With 5 different levels of static correction, as well as a tone-only mode for training, this collar allows you to find the perfect fit for your pet. Features: It has a smaller, lighter, more comfortable ergonomically designed collar The "tone only" mode gets the dog's attention with a beep Gets recharged in 2, 3 hours and its LED lights indicate when recharge is needed No more mistaking the right size and correction level between pets Item Specifications: For Use: With dogs of 5 pounds or more Correction Modes: 5 Levels of static correction Safety Precaution: This PetSafe Stay + Play Wireless Fence is NOT a solid barrier. The system is designed to act as a deterrent to remind pets by Static Correction to remain in the boundary established. It is important that you reinforce training with your pet on a regular basis. Since the tolerance level to Static Correction varies from pet to pet, Radio Systems Corporation CANNOT guarantee that the system will, in all cases, keep a pet within the established boundary. Not all pets can be trained to avoid crossing the boundary! Therefore, if you have reason to believe that your pet may pose a danger to others or harm himself if he is not kept from crossing the boundaries, you should NOT rely solely upon the PetSafe Stay + Play Wireless Fence to confine your pet. Radio Systems Corporation shall NOT be liable for any property damage, economic loss or any consequential damages, sustained as a result of any animal crossing the boundary. Proper fit of the collar is important. A collar worn for too long or made too tight on the pet's neck may cause skin damage. Ranging from redness to pressure ulcers; this condition is commonly known as bed sores. Avoid leaving the collar on the dog