Review on Containment Effective Waterproof Rechargeable Correction by Corey Krull

The collar randomly emits a warning tone around the house 75 feet from the line. The battery lasts 10 days and needs to be charged. There's no warning, it goes from green (a bright green LED you can see in the dark, so let's turn the color off at night) to red (it doesn't work, it doesn't warn you, but it doesn't work when the red LED lights up). the dog just walked past the invisible fence) When the battery is fully charged, it will do its job, you just have to keep an eye on it and set weekly charge reminders at night. The wall unit worked with the existing PetSmart fence wire and is well adjustable, we have ours on level 20 about 4ft from the border.