Invite all your pups to off-leash playtime with the Classic In-Ground Fence Rechargeable Receiver Collar. This pet fence collar has 8 levels of correction. Level 1 is a tone and vibration setting which is great to use when you are training your dog on his new in-ground fence boundary. Levels 2 to 8 are adjustable static correction settings which you can set based on your dogs temperament. Receiver collars with a vibration setting are also great for pets who are hard of hearing so they can safely enjoy playing outside too. Purchase a receiver collar for every pet in your family so they all can safely play off-leash together. You can add as many collars as you want to your compatible Classic In-Ground Fence. This receiver collar is also compatible with all PawzAway Pet Barriers, so your dog's collar can keep him safe when he's playing in the backyard, and keep him from hopping onto the furniture with dirty paws in the living room.