The Petrainer PET998DBB-2 is the best training solution for a person new to the realm of e-collar training systems. It allows the user to reinforce verbal commands to perfect dog obedience. This particular unit has a variety of features that make it one of a kind, including a compact, waterproof collar receiver. Capable of four modes to accommodate the needs of any trainer, which include: shock stimulation, vibration, beep and light. Finding a stimulation level that gets your dog's attention is easy as we offer 100 levels of vibration and static shock to ensure our collar works for any dog, no matter the temperament. Most useful in a home or yard environment, as the remote is compact and these types of environments are most suitable for the range offered. We've designed this system to easily be readable in dark or low conditions. For instance, the blue back lit LCD display is readable in dark conditions and the buttons are white stenciled with a blue background to "pop".