The YardMax Rechargeable In-Ground Fence Receiver Collar allows you to maximize the space you have available for all of your pets to explore. With additional Receiver Collars you can add an unlimited number of pets to your YardMax Rechargeable In-Ground Fence system. The rechargeable battery charges in 2-3 hours. This small, light weight waterproof collar is comfortable for your pet. The exclusive ReadyTest and PerfectFit test ensure the Receiver Collar is ready and working. Includes: rechargeable receiver collar, receiver charger, short and long contact points, test light tool, contact point wrench, and operating guide.