Dogtra 3500 Super-X
Built for the serious retriever trainer. The 3500 NCP is called the Super-X because of it's X-tra features, it's X-ceptional range, and it's design for X-treme training situations. The unit is fully waterproof with a one-mile range. This e-collar sets the standard for X-treme versatility and performance.
Click Details for more info