This is the intelligent pet training tool for you to use, suitable for a variety of dog types, with the save lock for quick start, also has the intelligent wear detection, come on and try it, it will not let you down. Features: The interlocking safety lock can avertaccidental touchingto the remote controller. Press the safety lock to turn on the machine with one button for quick training. Long-distance dual-way communication: Maximum distance is 1000 meters (3000ft), when there is no obstruction or interference. Recommended distance is within 300 meters (1000ft). Intelligent wear detection: The remote controller unit can display the wearing status of the collar, and intelligent feedback can tell the impact effect received by the pet through the vibrationsintensity of the remote controllerunit. Intelligent training feedback: The collar unit integrates a vibrationsdevice, which can intuitively feel the feedback of pet training and assist in improving the training effect. Three color