The all new DT Systems H2O 1800 PLUS series is a great new electronic collar system that can expand to a 2-dog or 3-dog system that can be used in a wide variety of applications. This fully waterproof shock collar 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 DT Systems H2O PLUS is designed with the harshest environments in mind. Our versatile Vibration feature, revolutionary Jump and Rise Stimulations, and convenient Beeper/Locator are also available on select DT Systems H2O 1800 PLUS models.  Free Shipping on DT Systems orders over $100.00. Your new DT Systems electronic collar comes with a complete Warranty and 30-day Money Back Guarantee.