For Stubborn or Hard to Train Dogs - 4 adjustable levels of static stimulation; highest intensity available
Tone and Vibration Warning - Ideal for training hearing-impaired dogs
Waterproof Receiver Collar - With low battery indicator
Add Unlimited Pets to Your System - Keep as many pets as you need safely in your garden with this add-a-dog receiver collar. Compatible with all PetSafe In-Ground Systems except YardMax® and UltraSmart®.
Adjustable Collar - Fits pets 3.6 kilos or more with neck sizes 6 to 28 inches
Battery Operated - Uses 9 Volt Battery (Not Included)