D.T. Systems H2O Series Dog Training E-Collar

D.T. Systems Dog Training Collars D.T. Systems has been building the world's finest, most advanced and affordable electronic training collars since 1983. D.T. Systems has consistently led the industry in cutting edge technology -- they were the first to introduce state-of-the-art microcomputer technology in their training collars. Each digital collar is lightweight, compact, convenient, and easy to use. They were also the first company to offer Positive Vibration? features in an electronic collar. D.T. Systems' collars were the first to feature an internal antenna woven into the nylon webbing of the collar, a patented process exclusive to D.T. Systems collars. Their premium lifetime warranty is the best warranty offered in the industry, and it's free to participating customers. It changes D.T. Systems' normal one-year parts and labor warranty to a lifetime warranty against manufacturing defects on parts and a one-year warranty on labor. Designed to go anywhere and handle anything your dog can dish out! One-mile range; 16 levels of intensity, adjustable from the transmitter; Nick or Constant stimulation; Positive Vibration? (on models 1820 and 1822 only), Beeper/Locator (on models 1850 and 1852 only) Modes. Built-in safety shutoff; rechargeable batteries in both the lightweight, waterproof collar and transmitter. Case included. Stimulation Types V =Vibration C =Continuous M =Momentary