Dogtra Additional Collar for 1900X Blue

3/4 Mile Range: Ensures reliable long-distance control, even in dense cover or open fields. 100 High Output Levels: Provides precise control to match your dog's temperament, from mild to stubborn. Nick, Continuous, & XPP Vibration Modes: Offers versatile training options, including a powerful XPP vibration for immediate attention. +10 BOOST & Level Lock: Delivers instant higher stimulation for emergency recall, with a safety lock to prevent accidental level changes. LED E-Collar Light: Enhances visibility in low-light conditions, ensuring your dog's safety during evening walks or hunts. +2 Protective Metal E-Collar Case: Acts like armor, adding extra toughness for the harshest conditions. outd IPX9K Waterproof Rating: Fully waterproof and designed to withstand high-pressure liquid spray, making it ideal for wet environments. One-Handed Control with Central Command Button: Allows for effortless operation, enabling quick and precise corrections. 3-Dog Expandable: Capable of controlling up to three dogs with additional receivers, making it suitable for multi-dog households.