The original Collar Receiver for SportHunter® 1825. Add another dog to your current SportDOG Brand® electronic training collar system or replace a Collar Receiver with the SDR-A Add-A-Dog® Receiver Collar. Comes with a convenient docking station that charges the collar in 2 hours.
• DRYTEK waterproof and submersible to 25 ft • Rechargeable Li-Ion battery • 40-60 hours of "on-time" per charge • Add a Collar for SD425