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The FieldTrainer® 425S takes the most advanced, industry-leading technology that SportDOG® has ever built into its e-collars and packaged it up in the most compact system ever offered. Specifically for stubborn dogs, the SD-425S has a higher range of stimulation than the SD-425. Ideal for training in the yard or field, or for hunting with close-working dogs, the SD-425S allows you to switch instantly between 7 levels of medium/high stimulation, as well as train with vibration and tone options.
