Control your dog's barking with a collar that's waterproof, lightweight, durable, and comfortable. This collar has 5 intensity levels-that you set instantly with a button. An easy to see power confirmation light, Bark Odometer(tm) correction monitor, and an internal bark sensor make this an easy-to-use and effective training tool. One replaceable lithium battery-battery will last a year in normal use. Included with purchase. Shipped directly from manufacturer.