Spend less time fussing over installation and more time playing with your pup! Short training sessions will have your pets aware of their limits quickly. Plus, our waterproof collars offer 5 levels of static correction (and a tone-only mode) for customized reinforcement based on your dog’s temperament. And for trips, the unit is easily portable – just plug it into an outlet! Cover a maximum of 180 feet in diameter or 90 feet in radius, with a minimum of 10 feet in diameter or 5 feet in radius. Plus, you can combine it with additional transmitters to expand your pet’s play area.