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.Features:
- Dog Size: 8 pounds or larger
- Fits neck size 5" - 22"
- Battery Type: Rechargeable Li-Ion