The H2O 1850 PLUS is a great collar system that can be used in a wide variety of applications. This fully waterproof unit covers both basic and advanced training needs for both professionals and novice users alike. Whether you are knee-deep in cold icy waters or knee-deep in tall grass on a dry sunny day, the H2O is designed with the harshest environments in mind. 1 mile remote trainer with Nick and Continuous stimulations, and Beeper/Locator with Locate, Run & Point mode, and Point Only mode audible from 450 yards.