Train with your smartphone Download the PetSafe® SMART DOG Trainer app and use the smartphone as a hand-held remote with your dogs training collar; app is compatible with iOS 8, Android 5 or newer69-metre range Safely train your dog inside the house or on the go; perfect for off-lead walks or coming when called3 training options in 1 trainer Use the tone (beep), vibration or 15 levels of static stimulation to teach your pet good behaviours or improve unwanted behavioursRechargeable battery The collar is rechargeable with a battery life up to 40 hours; USB charger included with a two-hour quick charge