Industry Leading Technology + Compact Design. The compact SportDog SD-425 Field Trainer is ideal for training in the yard, field, or for hunting with dogs that hunt close.
The FieldTrainer 425 takes the most advanced, industry-leading technology and packaged it in the most compact system ever offered. Both the transmitter and receiver are 100% DryTek waterproof and submersible. The SportDOG 425 can be expanded to control up to 3 dogs by adding the SportDOG Add-A-Dog Collar (SDR-AF), and has a 500 yard range.