Petrainer PET998DBB Waterproof Rechargeable Dog Training CollarFeatures: Uses: basic dog obedience, barking, hunting, digging, aggressive, jumping up, bolting and so on Remote Transmitter can control up to two dogs with 2 collar receivers Collar Size: Able to fit small, medium, large dogs and puppies, 15lbs or larger Rechargeable Lithium Batteries for Receiver and Transmitter, can be charged at the same time Waterproof Collar Receiver, Rainproof Remote Transmitter Stimulation: 100 Levels of Static Shock and