The Collar Receiver for FieldTrainer 425X and SportHunter 825X Remote Running shoes. Add some other dog for your current SportDOG Brand electronic coaching collar system or replace a Collar Receiver with the SDR-AFX Add-A-Dog Receiver Collar.
Collar Receiver handiest; expand your current system or replace an old collar
Compatible with the SportDOG Brand FieldTrainer 425X (SD-425X), 425 (SD-425), SportTrainer 575 (SD-575E), 875 (SD-875E), and SportHunter 825X (SD-825X), 825 (SD-825)
Water resistant and submersible to 25 feet the usage of DryTek technology
Fits dogs 8 pounds or larger with neck sizes 5″-22″
Rechargeable lithium-ion battery with 2-hour fast charge; includes a low battery indicator to help you know when to charge