![Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies](https://m.media-amazon.com/images/I/910Au8yKoHL.jpg)
Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies
![Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies](https://m.media-amazon.com/images/I/91oWve4Ok+L.jpg)
Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies
![Amazon.com: SportDOG Brand WetlandHunter 1825X Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Static : Pet Supplies Amazon.com: SportDOG Brand WetlandHunter 1825X Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Static : Pet Supplies](https://m.media-amazon.com/images/I/81M23cIqkDL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: SportDOG Brand WetlandHunter 1825X Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Static : Pet Supplies
![Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies](https://m.media-amazon.com/images/I/91xVDqakFFL.jpg)
Amazon.com: SportDOG Brand FieldTrainer 425X/SportHunter 825 Add-A-Dog Collar - Additional, Replacement, or Extra Collar for Your Remote Trainer - Waterproof and Rechargeable with Tone, Vibration, and Shock : Pet Supplies
![SportDOG SD-1225X / SD-1275E / SD-1825X / SD-2525 Add-A-Dog Additional Collar / Extra Receiver SDR-AX SportDOG SD-1225X / SD-1275E / SD-1825X / SD-2525 Add-A-Dog Additional Collar / Extra Receiver SDR-AX](https://s.turbifycdn.com/aah/gundog/sportdog-sd-1225x-sd-1275-sd-1825x-add-a-dog-additional-collar-extra-receiver-sdr-ax-110.jpg)