Protected Mode Automatic bark collar use 7 levels of progressive training. When No Bark Collars works 7 times in a row, it will enter a standby protection mode for 60 seconds which will be more humane.
Long Battery Life The maximum standby time of the Bark Collar is 30 days. The charging cable provided can charge Barking Collars 2 Pack at the same time. Pressing the power button twice in a row can test the battery level.