PetSafe Rechargeable In-Ground Fence Receiver Collar - Introducing the new rechargeable receiver collar for PetSafe in-ground fence systems! This waterproof receiver collar has 4 levels of static correction to match the sensitivity of your pet plus tone-only mode for training. Great for dogs 5 lb and up Small, light receiver collar is comfortable for your pet to wear Purchase additional collars for every dog in your family 4 levels of static correction plus a tone-only mode Collar strap adjusts to fit neck sizes 6-26 in Waterproof receiver collar Built-in rechargeable battery quickly recharges in 2-3 hours