PetSafe Stubborn Dog In-Ground Fence System with Waterproof Collar & 2 Free Batteries - Ideal for Training Escape-Prone Dogs in Large Yards

We have a large dog so the size of this is better fitting for him than the regular ones. This seems to have a better functioning system as in the vibrating and beeping sounds for him. Very good quality and seems to be durable and very simple to use. We can leave him outside more now than before and he loves playing in the water so it must be pretty good waterproofing on it.