The Dogtra EDGE RT is designed for the most demanding training environments. Whether you're a professional trainer or a serious amateur, the EDGE RT offers the simplest solution to the most complex training. The EDGE RT transmitter gives you a 'no look' one-hand operation, so your eyes are always focused on your dog. The 8 levels of Nick and Constant stimulation coupled with our Combination Buttons, offer a wide range of stimulation for every dog and every training situation. The Dogtra EDGE RT e-collar comes with a durable and fully waterproof receiver/collar and tube-shaped transmitter with 1-mile range and up to 3-dog expandability. The tube-shaped transmitter with the Selector Step Dial for stimulation control is uniquely designed to fit in your hand to further ensure one-handed operation, which is an essential feature to control multiple dogs. The receiver/collar is equipped with 5/8 surgical stainless steel contact points, which can be replaced with longer 3/4” contact points for dogs with thick or long coats. Download Manual for EDGE RT IPX9K WATERPROOF RATING: This unit has been tested and has received a waterproof rating of IPX9K. The Ingress Protection (IP) rating classifies the level of protection provided by the exterior casing and electrical enclosures against a variety of elements. Dogtra's IPX9K rating has been specifically tested for waterproof protection. This unit was tested at close range using powerful water jets with high pressure and high temperature over various points.  Learn More about IPX9K