1100 Yard Remote Dog Training Shock Collar with Auto Anti Bark & Waterproof Collar (2-Dog Kit)

I have had this for almost a year now. I got it when my pup was 6 months old after some formal training in which the trainer used one.The Good: The various settings work consistently and from a good distance (though I have not tested to see if it works at the full 1000 meters). My 1.5 year old lab hates to be on leash but responds well to a vibration when she starts venturing too far from me on a trail or the beach. I use the shock only when she goes charging full force towards another dog or dog walker and it will immediately get her attention and she will return to me without a yelp. It is waterproof. Rain, fresh water submerged, and salt water.The Bad: The controller is a bit bulky (the collar is fine on my 65lb pound dog). I have had it give random beeps on occasion. I could not find a reason but if I reset it to a different channel, it would stop.Battery life is on the short side. I only use mine for when I take her out now, so I mostly leave it on the charger between. The controller only needs to be charged every couple of weeks but the collar needs a charge every 2 days.My dog rarely barks so haven’t used that feature.