Designed for the waterfowl hunting environment with close-working dogs, the SportDOG Wetland Hunter 425 takes the most advanced, industry-leading technology that SportDOG Brand has ever built into its e-collars. Switch instantly between stimulation, vibration and tone to fit the correction or communication to your dog's temperament and learning ability. This model is finished in Realtree Max-4 camo, so it looks great while also blending in with the rest of a waterfowl hunter's gear. This flexible system lets you control up to 3 dogs.