SportDog SDR-AH Add A Dog Collar for Training Collar SD-3225

The SportDog SDR-AH Add-A-Dog Receiver Collar expands your SportDog HoundHunter training system. Features DryTek waterproof technology and rechargeable lithium-ion battery with 40-60 hour runtime.

• Compatible with HoundHunter SD-3225 and SportHunter systems
• DryTek waterproof to 25 feet
• Rechargeable lithium-ion battery
• 40-60 hours runtime between charges
• 2-hour quick charge with docking station
• Blue strap for dog identification
• For dogs 8 lbs and up
• Expand to train multiple dogs