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Original price was: $129.95.Current price is: $109.95.

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Availability: In stock


The SportDOG SDR-AXF Add-A-Dog Collar is the original Collar Receiver for FieldTrainer 425X and SportHunter 825X. Add another dog to your current SportDOG Brand® electronic training collar system or replace a Collar Receiver with the SDR-AXF Add-A-Dog Receiver Collar. Comes with a convenient docking station that charges the collar in 2 hours.

Compatible with:

  • FieldTrainer® 425 (SD-425), 425S (SD-425S)
  • FieldTrainer® 425X (SD-425X), 425XS (SD-425S)
  • SportTrainer® 575
  • SportTrainer® 875
  • SportTrainer® 1275
  • SportHunter® 825X (SD-825), 1225X (SD-1225X), 1825X (SD-1825X)
  • WetlandHunter® 425X (SD-425XCAMO), 1825X (SD-1825XCAMO)
  • ProHunter® 2525 (SD-2525)
  • HoundHunter® 3225 (SD-3225)
  • UplandHunter® 1875 (SD-1875)


  • DryTek® waterproof and submersible to 25 feet
  • For dogs 8 pounds or larger with neck sizes 5″ – 22″
  • Rechargeable lithium-ion batteries, Charges in 2 hours, lasts 40-60 hours per charge
  • Low battery indicator

In The Box

  • Receiver on 3/4″ Collar Strap
  • Charging Adaptor
  • Long Contact Points
  • Operating Guide

To learn more about the SportDOG SDR-AXF Add-A-Dog Collar features read the Owner’s Manual. To add a different color strap see the 3/4″ Universal e-collar strap sold separately.

  • Model: SDR-AXF
  • Manufactured by: SportDOG Brand
X-Series :: How to Add a Dog and Pair the Collar

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