remote control! - All functions are designed on the collar with a digital display showing battery level and sensitivity. to vibrations and shocks adjustable on 7 levels. When the dog's barking frequency reaches a certain frequency, the collar will work automatically, you don't need remote control anymore! Beware of excessive barking! - 4 working modes: beep, beep and vibration, beep and shock, beep and vibration and harmless static shock, if the dog's bark reaches a certain frequency, it will trigger the built-in user-friendly and efficient sound vibration sensor thank you. Effectively prevents your dog from barking at children outside. proximity, postmen and passing cars. ÛRE - If enabled; 7 times in 1 minute, the collar will automatically enter self-protection mode, better protect your dog from endless beeps, vibrations or endless shocks (wait 1 minute or press any button to exit this mode ). seams on both sides of the strap, when you walk your dog at night, if there is light, it