Stay & Play Wireless Fence Receiver Collar - Let outdoor playtime continue with the PetSafe Stay & Play Wireless Fence Rechargeable Receiver Collar. This collar is compatible with all PetSafe wireless fence systems. 5 Levels of Correction - 5 levels of static correction plus a tone-only mode help keep your pet secure inside the yard Waterproof - The waterproof collar comfortably fits dogs 5 lb and up and adjusts to fit neck sizes 6-28 in Rechargeable - A low battery indicator lets you know when it’s time to charge your pet’s collar; collar quickly recharges in 2-3 hours Contain All Your Pets - With the purchase of additional collars, you can safely contain an unlimited number of pets with your compatible PetSafe wireless fence Customizable Collar Strap - The interchangeable design of the receiver collar allows you to use any non-metallic, 3/4-in collar strap of your choice