HIGHOT 4 in 1 Pet Remote Trainer Electric Shock & Vibration Training Collar for 1 Dog The static impulse can quickly and effectively curb the improper deeds of the pet. 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. Both the static impulse and warning functions are set with automatic stop. This is for not reprimanding the pet continuously. With the vibration induction power switch in the collar receiver, its power can be automatically turned on and turned off. Collar is water resistant. The warning vibration will let the pet associate the vibration with the static impulse. In the end, vibration will achieve the same effect as the static impulse.