petsafe stay + play wireless fence receiver collar only for dogs and cats, waterproof and rechargeable, tone and static correction - from the parent company of invisible fence brand petsafe 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