The Remote Spray Trainer is pretty similar to our Spray Bark Collar, but instead of incorporating bark detection technology into the collar, we've swapped it out for a handheld remote so you're always in control. This collar is the best choice for training medium or large dogs who might be a little too shy or sensitive for static training, but it is effective for dogs of all temperaments. You can communicate with your dog using audible tone, vibration or spray, and the backlit display on the remote makes training easy any time of day. To help you save on refills, we specifically designed this collar to give your pet one quick burst of spray, unlike many other collars with longer spray settings. Also, we sell spray refills as pre-filled, recyclable cartridges, so you won't have to mess with refill canisters. We've thought of everything! Both the collar and the remote are waterproof, so rainy day walks or spontaneous jumps into the lake are totally okay. Your pet deserves the best. Trust PetSafe to help keep your pet healthy, safe and happy.