The FieldTrainer is the perfect system for introducing your dog to in-the-field training, or for hunting with close-working dogs. This series is loaded with technical breakthroughs in the smallest package available in this price range. Features such as 3-dog capability and waterproof/submersible Transmitters and Receivers are among the most advanced features offered in a mid-range training system. With 500 yards of range, palm-of-the-hand sized models and comfortable “soft-coat” Transmitter finish makes these units a pleasure to use. Because we know that no 2 dogs are alike, we’ve designed the FieldTrainer 425S model to provide higher stimulation for larger or stubborn dogs.