The collar length is adjustable to fit most kind of dog from 10 lbs to 120 lbs, for mild-mannered to stubborn disposition dogs * Electric training collar provides 100 level shock & 100 level vibration with LCD remote control * The strong static impulse can penetrate the hair of the pet and fabric within 6mm thick. It is unnecessary to let the discharging point touch the skin of the pet. Therefore it is safe for the pet * With the movement induction power switch in the collar receiver, it will turn on/off automatically to save power * Convenience of easy-to-read LCD screen shows the stimulation level