PetSafe SMART DOG® TrainerThe SMART DOG Trainer is our techiest option for remote training. Instead of using a handheld remote (like all of our other remote trainers), weve swapped it out for an app on your phone. Inside the app, you can customize whether you are right or left handed, and theres also an option to make your most used button bigger so you dont have to hunt for the settings you use the most. The app remote offers audible tones, vibration and stimulation levels