We love this collar! We really only use it for the vibration and beep sound when our dogs barking is out of control. It catches his attention, and he stops pretty quickly!The lock feature is a game changer. We have a 1.5 year old in the house so we make sure it’s always locked unless we are actively using it. Our son has ended up with the remote in his hand, and thankfully it’s been locked or he could have shocked the dog!