I love how easy it is to use. Perfect for training my 2 dogs. I like how you can switch from dog to dog, so I won’t have both my dogs getting the beeper or vibration. It has a lock & unlock button so no accidents pushing the beep, vibration or static buttons. I am only using the beep and vibrate buttons but I did do the shock test to see if it works and it does. I’ve never wanted to use shock collars but this one has vibrating and a beeper so I’m happy about that. It comes with silicone caps, long contact points and a test light tool for the static.