Remote Trainer Add-A-Dog® Collar - Free Spirit Pet Products
Remote Spray Trainer Add-A-Dog® Collar by PetSafe - PAC00-16736 in Training Collars & Accessories - Batteries & Accessories
SportDOG Add-A-Dog Extra Receiver Collar - SDR-AFE - (for SD-425X-E and SD-825X-E)
SportDOG - TEK-2L - TEK SERIES GPS TRACKING ADD-A-DOG COLLAR - 10 Mile – PetsTEK
Collar Clinic: SportDog Add-A-Dog Receiver
Dog Collar Receiver - Containment System Add-On - eXtreme Dog Fence
SportDOG SDR-AXS Add-A-Dog Collar for the FieldTrainer 425XS - Front Range Gun Dog
Amazon.com: PetSafe Add-A-Dog Remote Training Collar – Perfect for Small, Medium and Large Dogs – Choose from Tone, Vibration, or 15 Levels of Static Stimulation – Waterproof and Durable – Rechargeable : Pet Supplies
Amazon.com: SportDOG Brand SportHunter 1225X/1825X Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies
SportDOG Extra Collar for SD-425 or SD-825 Unit | Sporting Dog Pro
In-Ground Add-A-Dog® - Premier Pet
Shop for Deluxe Ultralight™ Add-A-Dog® Extra Receiver Collar | PetSafe® Australia
Amazon.com: Premier Pet Wireless Fence Add-a-dog Collar GIF00-16348
Add-A-Dog Lite Collar 300/600 Yard 8+LB. - Huber's Animal Health
PetSafe Deluxe Add-A-Dog Collar - Claws'n'Paws Pet Supplies
Premier Pet Wireless Add-A-Dog: Adds Unlimited Dogs to Premier Pet Wireless Fence, Additional or Replacement Collar, Adjustable, Waterproof, Tone & Static Correction, Low Battery Indicator - Walmart.com