Very easy to use. I love the ability to just use sound or vibration. It also keeps a charge for a while. I can also attest that it is water proof as our dog has gone swimming with it and has had baths with it on.

Works great. I haven't had any problems with its functionality. Thank you.

Used it for training my dog to walk and not pull

Like the remote, shows the battery life of the receiver and the remote. Very compact design. And you can add up to 4 dogs. Great value for the price.

Works great and battery lasts a long time. I think it took 2 weeks or so til the battery bar moved down one notch (of 4 notches).The lock feature is nice to avoid “pocket shocks”

Good, the dog is still very excited at the beginning, roared, shocked by the shock, now honest a lot, not how to roar