D. T. Systems H2O 1800-Plus Series Electronic Dog Training Collars -
With full one mile coverage via the innovative Maxx-Range 360º internal antenna, plus 16 levels of momentary or continuous stimulation including Gentle Touch Stimulation, these collars are designed to handle any training conditions. All systems are rechargeable and 100% waterproof, and the Soft-Grip transmitters not only have built-in safety shut-offs, but will actually float if dropped into the water. Available dual-vibration settings (1820 model) or multifunctional beeper (1850 model) give you exactly the options you need. And the Jump and Rise Stimulation (available in the 1830 model only), is the answer for tough training situations. ''Jump'' immediately boosts the stimulation to a higher intensity; ''Rise'' gradually increases the intensity as you hold the button. Expandable to 2- or 3-dog systems (1850-Plus expands to two only) with Add-on Collars (sold separately below). Includes rechargeable NiMH batteries in both collar and transmitter, plus 120V charger.