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Original collar for the SD-425S FieldTrainer. Use this add another dog to your current SportDog Brand eCollar system or replace one that has been lost or broken with the SDR-AS Add-A-Dog® Receiver.
Note: The Range for this collar when used with the same Model Transmitter is 500 yards. When using this collar with a Transmitter from a different Model, the range of the Transmitter will become the Effective Range.
500 yards range Waterproof 7 Stimulation levels Nick and Constant Tone and Vibration Lifetime Limited Warranty