Great product, right from the 2nd day, my beagle stubborn begins to return. Perfect for the reminder, games or exercises. 3modes: beeps, vibrations and shock to graduate from 0 to 100
However, having tested the voltage of the necklace on myself before putting on my animal, I realize that all 100 of the electric mode are dangerous! 5/100 the level is more than enough! test it on you before!