Review on rabbitgoo Dog Training Collar with Remote, 3 Modes Beep/Vibration/Shock, Rechargeable Waterproof Shock Collar for Dogs, Adjustable Levels - Ideal for Large, Medium, and Small Breeds by Jacqueline Sanchez

I would recommend this collar to my friends who like me plan to train their dogs off leash. The best thing about this collar is that the battery life lasts forever! The sleep function works well. When it falls asleep, you have to press the button twice to turn it on and carry out the command (buzz, noise and jolts). To work. It makes noise to alert the user that it's running, and you can turn it down if you want. It still works great after the dog jumped into the lake several times. I love that it has reflective thread on the collar as it's easy to lose sight of an energetic dog in the late afternoon. My dog usually wears collars and is not uncomfortable wearing them.