SportDOG Brand TEK 1.0 E-Collar Module Add On TEK-T US version only 7-mile range Continuous, momentary, and rising stimulation options Tone and vibration Compatable with TEK 1.0 systems only For dogs 10 pounds or larger US version only 7-mile range Continuous, momentary, and rising stimulation options Tone and vibration Compatable with TEK 1.0 systems only For dogs 10 pounds or larger