Dogtra committed over 20 years crafting dog training e-collars to perfect the precise fit-and-finish, intuitive design, and accountable performance. The Dogtra 1900S e-collar demonstrates what we strive for – an ultimate dog training tool that is durable, dependable, and designed for the most demanding conditions. This high output e-collar is the unit of choice for serious amateurs and award winning professional trainers in pet obedience, hunting, competition trials, and K-9.  The durable 1900S e-collar features a 3/4-mile range and is fully waterproof. The receiver has a unique modern design that lets the collar strap wrap around the receiver and your dog’s neck for enhanced comfort and seamless appearance. The Dogtra 1900S receiver outputs low-high stimulation from 0-127 levels, a wide range of stimulation that will fit any dog’s personality from mild to most stubborn. Using a patented Rheostat Dial, the gradual and precise stimulation control is displayed on the illuminated LCD screen on the handheld transmitter. The 1900S is also available in the 2-dog system, the 1902S. *The 1900S is not compatible with the HANDSFREE SQUARE.