SportDOG SDR-AF Field Trainer Add A Dog Collar
The original Collar Receiver for FieldTrainer® 425 and SportHunter® 825. Add another dog to your current SportDOG Brand® electronic training collar system or replace a Collar Receiver with the SDR-AF Add-A-Dog® Receiver Collar. Comes with a convenient docking station that charges the collar in 2 hours.
FieldTrainer 425 or 825 Units