The collar has plenty of room for adjustments if you’re putting it on a younger or full grown dog. The levels of adjustments for stimulation is perfect to where my dog isn’t terrified of wearing it and knows what’s expected with just beeping him after having the collar on for less than two weeks.
My dog was traumatized with a shock collar and after I tried everything I got this one and with a little bit of positive rewarding and him getting use to it he was fine