Keep every pet safely contained with the PetSafe YardMax® Rechargeable Additional Collar — the perfect solution for adding another dog to your existing YardMax® fence system. Designed for both small and large dogs, this rechargeable receiver collar delivers dependable performance and all-day comfort. Key Features: Fits Most Dogs: Suitable for pets 5 lbs and up with neck sizes from 6"–28". Rechargeable Convenience: Built-in rechargeable battery helps save money and reduce waste. Customizable Fit: Includes short and long contact points for optimal comfort and performance. Complete Add-A-Dog Kit: Comes with receiver collar, charger, test light tool, contact point wrench, contact points, and operating guide. Safe & Reliable Containment: Designed to work seamlessly with compatible PetSafe® systems. Compatible With: PetSafe YardMax® Cordless In-Ground Fence™ PetSafe YardMax® Rechargeable In-Ground Fence™ PetSafe Pawz Away® Systems Add another dog to your PetSafe® containment system with the dependable YardMax® Rechargeable Additional Collar and give your pets the freedom to play safely.