This Justpet Wireless Dog Fence M-3 comes with one collar for dogs and is an excellent choice for pet owners who want to keep their furry friends safe and secure. The fence is designed for dogs of all sizes and is perfect for those who want to give their pet the freedom to roam around without worrying about their safety.

The collar is comfortable to wear and the fence has a wireless range of up to 100 feet, making it ideal for use in large spaces. The Justpet Wireless Dog Fence M-3 is easy to install and comes with a one-year warranty. It is perfect for dogs who are constantly barking or roaming around without a leash. If you're looking for a reliable and effective electronic fence for your dog, then this is the perfect product for you.